The right-wing populist Hungarian government led by Viktor Orbán has suffered a landslide electoral defeat to the centre-right Tisza party, led by Péter Magyar.
This brings to an end 16 years of rule by Orbán and his Fidesz party, a move welcomed by many around the world who were concerned about Hungary’s “slide toward authoritarianism”.
Hungary has played a disproportionate role in EU climate and energy policy in recent years, by repeatedly vetoing climate action and by delaying the phaseout of Russian fossil-fuel imports.
Magyar did not prioritise climate and energy issues in his electoral campaign, but he has championed cooperation with the EU and proposed a 2035 deadline for “eliminating Russian energy dependence”.
Hungarian experts tell Carbon Brief that, while the new government is yet to be formed, it is likely that Magyar will move quickly to secure EU funds for “green” measures.
One expert notes that “this is not a progressive pivot”, with Hungary unlikely to emerge as a climate leader in the EU, even if it is less disruptive to the bloc’s wider climate strategy.
- What was Orbán’s approach to climate action?
- What will be the new Hungarian government’s climate and energy policies?
- How will the new government approach EU climate policy?
- What has the new leadership said about Russian fossil fuels?
What was Orbán’s approach to climate action?
Hungary has had a mixed record on climate change under then prime minister Orbán, supporting some relevant actions while opposing others – particularly those taken at an EU level. This broadly reflects his Fidesz party’s populist and Eurosceptic leanings.
Orbán has described the EU’s climate goals as a “utopian fantasy” that would “destroy the middle class”. He has also accused “western elites” of wanting people to “live in fear” of climate change.
Yet, despite being embraced by climate sceptics elsewhere and supporting climate-sceptic lobbyists, Orbán’s government has not overtly adopted such sceptical rhetoric.
In fact, reflecting broad Hungarian support for climate action, Orbán has framed his nation as a “climate champion” – albeit one taking a “pragmatic” approach. This was captured in his speech at the COP29 summit in 2024, when he said:
“We must continue advancing the green transition, while also maintaining our use of natural gas, oil and nuclear energy…Our climate policy should be guided by careful consideration and common sense, not by ideology, alarmism or panic.”
Domestically, Orbán’s government has pursued various climate goals, including a 2050 net-zero target, phasing out coal power by 2029 and supporting the expansion of solar power.
What will be the new Hungarian government’s climate and energy policies?
Climate change was not a major issue in the April election and Magyar, the incoming prime minister, hardly mentioned it in his campaign.
However, the 243-page manifesto released by his Tisza party includes many climate-related proposals, such as home insulation, railway electrification and tackling drought.
The document says some of these measures – notably “energy modernisation and efficiency programmes” – will be funded with billions of euros in EU funds that have been frozen under Orbán. (See: How will the new government approach EU climate policy?)
One notable pledge is to “double the share of renewable energy in domestic energy supply” by 2040. As the chart below shows, Hungary already generates three-quarters of its electricity from clean sources – predominantly Paks, its single nuclear power plant.
Nearly a third of Hungary’s electricity comes from solar, which has benefited from supportive government schemes in recent years. In contrast, for years, the Orbán government blocked the construction of wind turbines, meaning there is virtually no wind power in Hungary.
The Tisza manifesto recognises this imbalance, stating that “we will abolish the unnecessary restrictions preventing the installation of new wind turbines”, while also supporting geothermal energy.
Energy prices are a key political issue in Hungary, as they are in many nations around the world. Orbán’s “utility cost reduction” has been a flagship policy for many years, capping household prices using large state subsidies.
During the election, Orbán accused his opponent of planning to get rid of the energy price cap. In fact, the Tizsa manifesto says the new government will “maintain and expand” the scheme and add new VAT cuts on firewood.
Despite having few batteries and electric vehicles (EVs) domestically, Hungary has emerged in recent years as a major battery manufacturer, driven by Chinese and South Korean investment. However, this boom has sparked environmental and social concerns.
Zsolt Lengyel, founder and chair of the Institute for European Energy and Climate Policy (IEECP), tells Carbon Brief:
“Orbán’s battery and EV strategy – in theory, a flagship of the transition – has backfired politically…So Tisza inherits a paradox: it needs to accelerate the transition, but does so in an environment where parts of that transition have already lost public legitimacy.”
With much still unknown about Magyar’s attitude to climate and energy policy, some Hungarian experts that Carbon Brief spoke to cautioned against “speculation” and “wishful thinking” when assessing his climate credentials.
How will the new government approach EU climate policy?
There is cautious optimism among EU officials and leaders that a Hungarian government led by Magyar will be more cooperative on EU-led initiatives.
Under Orbán, Hungary has been a vocal and persistent opponent of EU climate policies.
Since 2011, 21 of all the 48 vetoes on joint EU actions have been used by Hungary. These include blocking efforts to sanction Russia following the country’s invasion of Ukraine. (See: What has the new leadership said about Russian fossil fuels?)
Among other issues, Hungary has vetoed or obstructed progress on the EU’s 2050 net-zero target, the “fit for 55” legislative package to help meet that goal and the 2035 ban on petrol and diesel cars.
Generally, this opposition did not totally block these policies, as most did not require unanimous agreement among EU member states. However, it did tend to slow down or complicate the process. Hungary was also not acting alone – it was often joined by fellow eastern and central European states, claiming the policies would have high costs.
Nevertheless, the Orbán government’s aversion to the EU has taken it further than other states. In recent months, for example, Hungary has launched a legal case against the EU over its phaseout plan for Russian oil and gas imports.
In this context, Lengyel tells Carbon Brief:
“Orbán’s exit removes Hungary’s most damaging feature in EU climate politics: the ideological reflex to oppose ‘anything Brussels does’.”
However, just because Magyar is less hostile to the EU does not mean his government will be a climate leader.
Magyar’s centre-right Tisza party is aligned with the European People’s Party (EPP) grouping in the European parliament, which has been instrumental in weakening EU climate goals in recent months. Given this, Lengyel tells Carbon Brief.
“Let’s be clear: this is not a progressive pivot. Tisza sits close to the EPP mainstream and is unlikely to challenge it. If anything, it will follow it, including on any watering down of green-deal elements.”
Crucially, Hungary is entitled to billions of euros of EU funds that have been blocked due to breaches of conditions regarding the rule of law and human rights under Orbán.
These include €9.5bn for Hungary’s recovery and resilience plan, the EU’s post-Covid recovery fund, much of which is earmarked for the “green transition”.
This finance needs to be disbursed before the end of August – and both Magyar and the EU have been clear that unlocking the funds is a priority.
Jozsef Feiler, director of the south-east Europe and Hungary programme at the European Climate Foundation, which funds Carbon Brief, says “full EU compliance” will be crucial for Hungary over the coming months, in order to obtain these funds. He tells Carbon Brief:
“The economic and financial stability of the new government [will depend] on obtaining the recovery and resilience facility funds and managing some kind of absorption before the 26 August hard deadline.”
Another early challenge will be the new government’s approach to the new part of the EU’s emissions trading scheme (ETS) – known as ETS2 – which will put a price on emissions from buildings, cars and other sources not covered in the original ETS.
ETS2 is already facing criticism from member states concerned about rising fuel costs. Moreover, Hungary is likely to be one of the countries that is most exposed to high fossil-fuel prices.
István Bart, a senior director in carbon pricing at the Environmental Defence Fund, tells Carbon Brief that Orbán’s government has done little to help with the implementation of ETS2, which is currently due to start in 2028. He notes that, with the question of affordability so fraught in Hungary, it is unclear how Magyar will tackle this issue.
What has the new leadership said about Russian fossil fuels?
One of the most notable policy statements made in Tisza’s manifesto is a commitment that:
“By 2035, we will eliminate Russian energy dependence and diversify our domestic energy supply.”
Despite its relatively clean electricity supply, Hungary is still heavily reliant on fossil fuels – including in its transport, heating and industrial sectors – the majority of which are imported.
Russia is Hungary’s main fossil-fuel trading partner, with the Druzhba and TurkStream pipelines supplying much of the smaller nation’s needs for oil and gas, respectively.
Among EU member states, Hungary is second only to Slovakia in terms of reliance on Russian fossil fuels. In 2024, 74% of Hungary’s gas and 48% of its oil were imported from Russia, as shown in the chart below.
Since Russia’s full-scale invasion of Ukraine in 2022, most EU nations have taken steps to reduce their dependence on Russian fossil fuels.
The EU has implemented a series of sanctions on Russia and the European Commission launched the REPowerEU plan to “fully end dependency on Russian energy”.
Under Orbán, however, Hungary has obstructed efforts to wean the EU off Russian fossil fuels, citing energy-security concerns. It has successfully negotiated exemptions from Russian oil sanctions, allowing the country to increase its reliance on cheap Russian crude.
The REPowerEU regulation involves a ban on Russian pipeline gas by September 2027. Unlike sanctions, the EU did not need unanimity among states to pass this.
It is notable that Tisza has only committed to end reliance on Russian energy by 2035 – eight years after the EU deadline. It is unclear how Magyar’s new government will negotiate this discrepancy, especially given long-term contracts with Russian suppliers.
Hungary also relies on Russia for nuclear technology and supplies of uranium for its nuclear plant. In its manifesto, Tisza says it will explore the possibility of sourcing nuclear fuel from US or French suppliers, as well as building small modular reactors.
Orbán had already started pursuing diversified nuclear and fossil-fuel supplies by buying from the US, even as it secured exemptions from US sanctions on Russian energy imports. It is possible that Tisza may maintain this approach.
However, with the Iran war and energy crisis looming in recent months, Bart, from EDF, tells Carbon Brief:
“Before the Iran war started, you could have said: ‘Why don’t you just buy LNG [liquified natural gas]?’…Now it seems like less of an option, so, unfortunately, in the short term, [Russian gas] has to stay because we don’t really have an alternative.”
The post Q&A: What Magyar’s defeat of Orbán in Hungary means for climate and energy appeared first on Carbon Brief.
Q&A: What Magyar’s defeat of Orbán in Hungary means for climate and energy
Four Ugandan farmers filed a case with London’s High Court on Tuesday, aiming to stop the East African Crude Oil Pipeline (EACOP) from starting to operate by asking the court to apply Uganda’s laws against the project’s UK-registered company.
The controversial 1,443-kilometre (897-mile) pipeline, majority-owned by French energy company TotalEnergies, aims to carry crude from Ugandan fields for export through neighbouring Tanzania. About 80% has been built so far, according to its developers.
The pipeline’s first oil exports are expected as soon as October, according to its developers, and the campaign group Avaaz, which is backing the farmers’ crowdfunded lawsuit, called it “one final chance to stop one of the worst oil pipelines on the planet”.
The claim, filed by London law firm Leigh Day, argues that EACOP Ltd’s role in developing and operating the pipeline breaches Ugandan laws that protect citizens’ right to a clean and healthy environment.
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Ugandan farmers use British court to try to stop East Africa oil pipeline
The farmers and their lawyers will argue that a UK-based entity linked to the East African Crude Oil Pipeline has breached Ugandan law and construction should halt -
French court rules Total must revise climate plan to account for all emissions
Oil and gas giant TotalEnergies has been given six months by a court to publish a more robust climate plan -
Uganda cites contentious IEA fossil fuel scenario backed by Trump administration
Critics of the African nation’s oil ambitions say referencing the International Energy Agency’s most pessimistic scenario for climate action is a risky policy
One of the claimants, Racheal Tugume, told a press conference she had been displaced from her land due to the pipeline’s construction, which she said had damaged local rivers, wildlife and ecosystems that communities depend on for their livelihoods just as erratic weather linked to climate change takes an increasing toll.
“I am very happy that there are people in countries like the UK who are listening to us, who are behind us and who have come to support us,” Tugume said, adding that she hoped the case would bring justice to communities affected by the pipeline.
Ugandan law in UK court
While the pipeline is a joint venture led by TotalEnergies, with smaller stakes owned by Ugandan, Tanzanian and Chinese national oil firms, it is operated by EACOP Ltd, a company registered to an office in London’s Canary Wharf financial district.
EACOP Ltd did not respond to a request for comment.
The claim appears to be the first attempt to have Uganda’s climate and environmental protections enforced in a foreign court, partly reflecting concerns over whether cases challenging the multibillion-dollar pipeline would get a fair trial in Uganda.
Ugandans living near new oil pipeline let down by compensation programmes
Concerns about access to a fair hearing are among the issues the court will consider when deciding if it should take on the case, said Matthew Renshaw, partner at Leigh Day.
Renshaw said that precedents including the Nigerian oil pollution case against Shell have shown that claims against British-registered companies for harms overseas can be successfully fought in UK courts.
“We are proud to represent the four brave principled individuals,” Renshaw said.
Constitutional protections
The pipeline project has already been subject to repeated lawsuits in several countries, none of which have succeeded. A climate lawsuit filed in Uganda more than a decade ago by a group of young people has yet to conclude. Another at the East African Court of Justice, brought by campaign groups against Uganda and Tanzania, was rejected on procedural grounds last November.
A separate ongoing lawsuit in TotalEnergies’ home country of France – a refiled version of an earlier failed claim – cannot stop EACOP going ahead, but it does seek damages from TotalEnergies for affected communities.
With the newly launched case, Leigh Day’s legal adviser Marc Willers said the claim draws on specific Ugandan laws in a bid to stop EACOP’s operations.
Uganda may see lower oil revenues than expected as costs rise and demand falls
These include the Ugandan constitution, a 2019 environmental law and the National Climate Change Act 2021, which gives Ugandans the right to bring a case before a court in circumstances where anyone or any entity threatens the country’s ability to mitigate climate change.
Stopping a “carbon bomb”
The pipeline, which will link Uganda’s Lake Albert oil fields to Africa’s east coast in Tanzania, has already displaced thousands of people and cuts through the Lake Victoria basin, one of East Africa’s major freshwater systems and a critical water source for around 40 million people.
According to the BankTrack non-profit, when the pipeline is at peak production, it will carry 216,000 barrels of crude oil per day and release over 33 million tonnes of carbon emissions each year. Over its full lifetime of 25 years, it is estimated to release about 379 million tonnes of greenhouse gas emissions across its value chain including construction, refining and product use.
A May 2026 report from Earth Insight also warns that the pipeline and related infrastructure could affect 158 wetlands in Uganda, 11 rivers, 44 protected areas and seven key biodiversity areas while disrupting about 2,000 square km of protected wildlife habitats.
This is why the primary focus of the UK court case is to stop the operation of the pipeline in its tracks, Leigh Day’s Willers said, calling it a “carbon bomb” that would worsen the world’s climate crisis.
Long wait for first hearing
While the purpose of the case is to stop the pipeline from launching operations, Renshaw said it could take about 12 months before the case gets a first hearing and about 18 months before it goes to trial.
Billions unlocked as Green Climate Fund agrees to spend more and save less
The farmers are, however, seeking an injunction to stop EACOP Ltd from proceeding with operations. In the event that shipments begin, the lawsuit will still seek to stop the pipeline from then on, Renshaw said.
“We will be doing what we can to expedite matters but it is possible that EACOP will have started operating the pipeline before the claim is heard. If that is the case, the claim would intend to halt operations from that point. For example, the pipeline may operate for just one year rather than 30-plus, resulting in far less harm,” he said.
The post Ugandan farmers launch UK court case against East African oil pipeline appeared first on Climate Home News.
Ugandan farmers launch UK court case against East African oil pipeline
Climate Change
Cited 7 July 2026: ‘Impossible’ heat | Global ocean record | Climate change and the ozone hole
Welcome to Cited, your essential guide to new climate research.
In the news
‘HEAT ALERT’: At least 25 people died as a “heat dome” smothered the eastern half of the US, reported the Guardian, with more than 20 states under “stifling temperatures more than 100F (38C)”. More than 140 million people were under heat alerts, the outlet said, with dead bodies found in “homes with no air conditioning, outside their residences, on the street and in parked cars”. Analysis by World Weather Attribution (WWA) found that the combined heat and humidity would have been “virtually impossible” without human-caused warming, reported the New York Times.
‘MORTALITY WILL RISE FURTHER’: Meanwhile, extreme heat continued to hit Europe, with Le Monde reporting on temperatures of 40C in France, Portugal and Spain again this past weekend, alongside “devastating” wildfires. Public Health France doubled its preliminary estimate of the “excess deaths” from the extreme heat in late June, from 1,000 to more than 2,000, according to the Guardian. The higher figure was still “probably an underestimate”, the agency said. Analysis published by Carbon Brief put the figure at 2,700 heat-related deaths. A WWA attribution study, covered by Carbon Brief, found that Europe’s June heatwave would have been “virtually impossible” even 50 years ago.
‘BOOST TO GLOBAL TEMPERATURES’: The UN World Meteorological Organization (WMO) “raised its forecast for the rapid emergence of a strong El Niño in the coming months, warning that the phenomenon is likely to drive global temperatures higher”, reported Reuters. A WMO scientist told the newswire that “El Niño conditions have emerged in the equatorial Pacific and there is a remarkable agreement between forecast models that this will be a strong El Niño”.
Research picks
Extremes
- The annual season when “intense” tropical cyclones occur has lengthened by 10-14 days per decade across the world since the 1980s | Nature Communications
- There is an “increasing” and “overlooked” global threat from glacial outburst floods from small lakes | Nature Sustainability
- Female smallholder farmers in sub-Saharan Africa experience crops losses 2-2.5 times greater than male smallholders in periods of extreme heat | Nature Sustainability
Policy
- The summaries for policymakers in Intergovernmental Panel on Climate Change (IPCC) mitigation reports over 2001-22 “have not yet become more solution-oriented while abiding by their policy-neutrality principle” | npj Climate Action
- Two-thirds of countries address inequality in their national pledges under the Paris Agreement – particularly in “countries with lower levels of human development and greater income inequality” | Climate and Development
- To “future proof” the Paris Agreement’s “well-below 2C” limit, it should be interpreted as a median “peak warming” of 1.6-1.8C, rather than a 66-90% chance of staying below 2C | Nature Climate Change
Land sink
- From 2001 to 2015, northern Eurasia absorbed about 0.47bn tonnes of carbon each year – around one-third of the total global land carbon sink | Global Biogeochemical Cycles
- Model simulations of potential land-use carbon emissions out to 2100 show that “deforestation and forest regrowth dominate variability” of emissions, with policy timing and ambition “exerting strong control” | Nature Communications
- Tropical forests are facing an increase in areas that exceed critical temperatures where their “photosynthetic system breaks down” | Proceedings of the National Academy of Sciences
Captured
On 21 June, global average sea surface temperature (SST) reached a record high for the day of the year, according to the Copernicus Climate Change Service (C3S). Daily SST for the global ocean, excluding polar regions, reached 20.86C on 21 June, exceeding the 20.83C reached on the same day in both 2023 and 2024, the C3S said. Global SST has remained at record levels for every day since. The conditions “could indicate the beginning of a new phase, leading, once more, to uncharted territory”, said C3S director Carlo Buontempo.
56 hours and 30 hours
The amount of time that the average lifespan of tropical cyclones in the north-east and north-west Pacific has shortened, respectively, over 1982-2024, according to a study in npj Climate and Atmospheric Science. This shorter lifespan “compresses the time available for weather forecasting and disaster preparedness”, the authors said.
Spotlight
The ozone hole and climate change
As a new “thought experiment” asks whether the hole in the ozone layer could, theoretically, have been identified decades before it was discovered, Carbon Brief explores the interactions between climate change and the ozone hole.
It is now more than 40 years since the discovery of the hole in the ozone layer over Antarctica, detailed in the journal Nature in 1985.
A study more than a decade earlier had predicted that chlorine-based substances – such as chlorofluorocarbons (CFCs) – could lead to the destruction of ozone in the stratosphere.
So, in theory, how early could the ozone hole have been detected?
New research, published in the Proceedings of the National Academy of Sciences, explored this very question.
Study co-author Prof Susan Solomon from the Massachusetts Institute of Technology is a leading atmospheric scientist. In the late 1980s, Solomon and colleagues identified the mechanism behind how CFCs were causing ozone depletion.
The new study is a “thought experiment”, Solomon told Carbon Brief, asking when scientists could have discovered the ozone hole had they had access to modern satellite observations.
“We found that depletion could have been detected as early as 1957 in the tropical upper stratosphere, where natural variability is especially small,” explained Solomon.
This would have been before the use of CFCs became widespread, Solomon added. Instead, early ozone depletion was caused by carbon tetrachloride, a chemical used as a cleaning agent, as well as in fire extinguishers and for producing refrigerants.
For many decades, the ozone hole and global warming have often been confused by the public and the media, Solomon explained:
“It’s common to imagine that because ozone is so important at shielding us from the UV [ultraviolet] light that causes skin cancer, then having less ozone must mean the Earth would warm up.”
For example, in a 1995 editorial, the Los Angeles Times congratulated the Nobel prize-winning chemists who identified the threat of CFCs to the ozone layer. The newspaper noted that these processes “threaten calamitous global warming by damaging the Earth’s protective layer of ozone”.
However, said Solomon, “the Earth is warmed much more by visible light – UV doesn’t really contribute, so ozone depletion doesn’t cause significant warming”.
Regional impacts
The depletion of ozone actually has a very small cooling effect at the Earth’s surface. But this is more than outweighed by the warming impact of CFCs and other ozone-depleting substances.
This warming impact means that efforts to reverse ozone depletion have had a beneficial impact on the climate.
The Montreal Protocol, a 1987 international agreement to phase out CFCs, “has played – and is playing – a very substantial role in safeguarding climate too”, said Solomon:
“It turns out that the CFCs and their replacement gases HCFCs [hydrochlorofluorocarbons] are strong greenhouse gases, so phasing out their production has not only avoided a lot of ozone depletion that would otherwise have occurred, it also had a big influence on global warming.”
HCFCs were considered as “transitional substitutes” for CFCs – they still damaged ozone, but to a lesser extent – until ozone-safe alternatives were commercially available.
Hydrofluorocarbons (HFCs), which are not ozone depleting, began to be used widely in the 1990s. However, HFCs are also potent greenhouse gases. HFCs and similar replacements are now being phased out under the 2016 Kigali Amendment to the Montreal Protocol.
While the ozone hole itself has only a very small impact on global temperatures, it does have a clear impact on the regional climate over Antarctica.
Prof David Thompson from Colorado State University, working with colleagues including Solomon, has published research demonstrating that “changes in southern-hemisphere winds linked to the stratospheric ozone losses extend all the way down to the ground in some seasons”, explained Solomon.
This has “reduc[ed] warming that would have occurred in interior Antarctica and enhanc[ed] warming in the Antarctic Peninsula region”, she said.
The knock-on impacts include “wind changes [that] actually extend beyond Antarctica to the mid-latitudes of the southern hemisphere, where they even affect rainfall”, she added.
Preprints to watch
Carbon Brief’s pick of new papers under review
- The drying impact over Africa from using stratospheric aerosol injections to stabilise global temperatures would only be minimised “when combined with a strong decarbonisation effort” | Earth System Dynamics
- The El Niño-Southern Oscillation and Indian Ocean Dipole could “shape” the playing conditions at the Rugby World Cup 2027 in Australia | Journal of Southern Hemisphere Earth Systems Science
- A “strong” weakening of the Atlantic Meridional Overturning Circulation (AMOC) would “profoundly alter the climate-carbon cycle system”, underscoring the “importance of explicitly accounting for AMOC risks in long-term climate assessments” | Earth System Dynamics
Noticeboard
- 6 July-25 September: Registration open for experts to review the first-order draft of the Intergovernmental Panel on Climate Change’s Working Group I report
- 7-15 July: UN High-level Political Forum on Sustainable Development, New York
- 19 July: Application deadline for a postdoctoral scholar in transdisciplinary climate research at Penn State University, US | Salary: unknown
- 22 July: Application deadline for PhD project on “climate change impacts on the Antarctic coastal ocean carbon sink” at the University of East Anglia, UK
- 26 July: Application deadline for PhD projects on “AI for land-atmosphere feedbacks during hydroclimatic extremes” at the Helmholtz School for Integrated Data Science in Environmental & Life Sciences, Germany
- 29 July: Application deadline for an assistant professor in Earth and environmental geosciences (palaeoclimatology) at Colgate University, US | Salary: $97,500-101,500
- 31 July: Application deadline for PhD project on Arctic Ocean methane oxidation at Stockholm University, Sweden
Cited is researched and written by Cecilia Keating, Robert McSweeney, Ayesha Tandon, Daisy Dunne and Dr Giuliana Viglione.
Please send tips, feedback and upcoming climate research to cited@carbonbrief.org
This is an online version of Carbon Brief’s fortnightly Cited email newsletter. Subscribe for free here.
The post Cited 7 July 2026: ‘Impossible’ heat | Global ocean record | Climate change and the ozone hole appeared first on Carbon Brief.
Cited 7 July 2026: ‘Impossible’ heat | Global ocean record | Climate change and the ozone hole
In June 2026, a record-breaking heatwave swept across Europe, with France among the first and hardest hit countries.
In a new analysis, we estimate that the extreme conditions caused more than 2,700 heat-related deaths in France.
We also show how France’s extreme temperatures in June exceeded projections from climate models.
Our findings illustrate the human toll of extreme weather as the world warms.
We also highlight the challenges in projecting the magnitude of future heatwaves and their impacts on people.
Outpacing projections
For most of this century, Europe has seen summer heat extremes that outpace projections from climate models.
Several different factors likely explain this trend, including reductions in planet-cooling aerosols as nations have cleaned up their air pollution, as well as changes in atmospheric circulation patterns, which models struggle to represent.
In June 2026, daily high temperatures averaged across France reached 36.9C, shattering the previous June record set in 2022 by 2.4C.
[For more on the impacts and coverage of Europe’s June heatwave, see Carbon Brief’s explainer.]
The rise in observed temperatures in France has outpaced projections made by climate models, with June maximum temperatures more in line with what was expected for the 2070s.
This is illustrated in the figure below, which shows how France’s average maximum daily high temperature for June recorded in 2026 (black line) compares to climate model projections (blue and orange lines).
Counting the death toll of climate change
The downstream impacts of these extreme temperatures are lethal.
Scientists are able to estimate the death toll of high temperatures in many locations, depending on the availability of mortality and climate data.
There are several ways to do this.
One option is to examine death certificates to see which deaths have been directly recorded by physicians as related to heat. However, there is strong evidence that this method significantly undercounts heat-related deaths, as most death certificates do not consider environmental factors such as heat when diagnosing the cause of death.
Alternatively, it is possible to calculate the rate of total (“all-cause”) mortality in a given time period relative to previous time periods – for example, by comparing the total number of deaths in June 2026 compared to the average of previous Junes. This “excess deaths” figure can be used as an estimate of the deaths from a heat wave.
Using this approach, Public Health France attributed around 2,000 deaths in France to the extreme heat in the week of 22-28 June.
Finally, scientists can use long-term data on overall mortality and correlate changes in mortality with changes in temperature to understand the statistical relationship between the two.
Research published in Proceedings of the National Academy of Sciences in 2025 that used this third approach found that mortality rates in France increase rapidly in cold or hot conditions as daily maximum temperatures depart further from approximately 20C.
This pattern of a U-shaped response of mortality to temperature – shown in the figure below – is very consistent across time periods and regions around the world.
To calculate the death toll of the June 2026 heatwave in France, we compared observed temperatures over 12-29 June to their baseline average over 1980-2025.
The difference between these two temperatures helps us understand how many more people died than they would have in the absence of such extreme conditions.
Over 12-29 June, we found that France has experienced around 2,700 heat-related deaths above the average baseline. Day-to-day heat-related mortality rates rose from less than 100 to almost 300 on the hottest days of 24 and 25 June.
This is shown in the graph below, which illustrates the cumulative total heat-related deaths seen in France over the two-and-a-half week period. The inset shows how heat-related deaths fluctuated on a day-to-day basis during this time.
Recent analysis by World Weather Attribution has already shown that human-caused climate change increased the frequency and intensity of the June heat wave across Europe.
Meanwhile, previous research has shown there is substantial evidence that heat-related mortality in Europe has already been elevated by greenhouse gas emissions.
As a result, we can be confident that at least some of the more than 2,700 deaths already seen in France are directly due to the burning of fossil fuels.
Calculating climate risk
In April, the UN-led body responsible for coordinating the work of climate modelling centres – the Coupled Modelling Intercomparison Project (CMIP) – unveiled a set of seven new emissions scenarios.
These are designed to replace the previous scenarios that have been used by scientists to understand how the climate might change in the future. They will feed into the upcoming seven assessment report (AR7) of the Intergovernmental Panel on Climate Change (IPCC).
The range of future emissions in the new CMIP scenarios is smaller, with scenarios of very high or very low emissions no longer on the table.
The retirement of the very-high emissions scenario – known as “RCP8.5” – led to certain commentators in the media and in politics, including US president Donald Trump, arguing that the risks of climate change had been “overstated”.
[For more on false and misleading claims around the new emissions scenarios, see Carbon Brief’s factcheck.]
Our analysis of June’s heat-related deaths in France suggests that, even if the most severe emissions pathways are no longer needed, climate impacts are taking a heavy toll on society.
Moreover, the temperatures seen in France show that climate models continue to underpredict the magnitude of heatwaves for a particular level of global warming.
This is because greenhouse gas emissions are only a first step in estimating the impacts of climate change.
The second step is converting emissions to changes in the climate at both the global and local levels – or hazards. This includes heatwaves, flash floods and droughts.
The third step is to determine how changes in the hazards will affect local populations. This can be determined by calculating people’s exposure and vulnerability to hazards.
Substantial uncertainty persists at every stage of this sequence.
For example, scientists do not know exactly how the global climate will react to ever-rising greenhouse gas emissions – nor the extent to which global temperature increases will drive local climate hazards. We also do not know how climate change at a local level impacts human health outcomes.
Managing the future of heat risk
Almost all heat-related deaths are preventable.
Adaptation options, such as air conditioning, heat action plans and social support for isolated people, will be crucial as the climate moves away from the typical conditions that people are used to.
Our previous research showed that France made a lot of progress reducing heat-related mortality after the deadly 2003 summer heatwave by taking many of these actions.
Adaptation can reduce deaths, but it cannot eliminate the risk created by continued warming.
Without a move away from fossil fuels, future heatwaves will keep testing the limits of public health systems and more people will die.
The post Guest post: France’s June heatwave caused more than 2,700 heat-related deaths appeared first on Carbon Brief.
Guest post: France’s June heatwave caused more than 2,700 heat-related deaths
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Greenhouse Gases11 months ago
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Renewable Energy9 months agoSending Progressive Philanthropist George Soros to Prison?
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Climate Change2 years ago
Bill Discounting Climate Change in Florida’s Energy Policy Awaits DeSantis’ Approval
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Carbon Footprint2 years agoUS SEC’s Climate Disclosure Rules Spur Renewed Interest in Carbon Credits
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