Extreme Temperature Diary- Wednesday May 27th, 2026/Main Topic: Extreme Heat in Europe ‘A Brutal Reminder’ of Climate Crisis, UN Chief Says

Extreme heat in Europe ‘a brutal reminder’ of climate crisis, UN chief says | Extreme heat | The Guardian

Extreme heat

Extreme heat in Europe ‘a brutal reminder’ of climate crisis, UN chief says

Simon Stiell said burning fossil fuels was driving intense heatwaves as UK and France broke temperature records on consecutive days

Jon Henley in Paris and Sam Jones in Madrid

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The UN climate chief has said an extreme early heat event sweeping parts of western Europe was “a brutal reminder of the spiralling impacts of the climate crisis”, after France and the UK set new temperature records for May on two consecutive days.

Simon Stiell, the executive secretary of the UN Framework Convention on Climate Change, said on Wednesday the “main culprit” was humanity’s burning of coal, oil and gas – known to be the primary driver of climate change.

A man in glasses holds a blue umbrella while walking in a sunny Madrid square

“The science is clear that human-induced climate change is making these heatwaves more frequent and extreme,” Stiell said, as France, Spain and the UK sweltered in temperatures usually associated with July or August.

“Protecting human lives, businesses and economies from extreme heat and the many other soaring costs of climate change is core business for every nation, and it starts with kicking the fossil fuel addiction much faster.”

The war in the Middle East had laid bare the “soaring costs” of fossil fuel reliance and the need to pivot to cleaner sources of energy, Stiell said, also noting 43C-plus conditions in India, where authorities have reported deaths from heatstroke.

A woman sitting in an underground train carriage cooling herself with a portable fan
The UK record for the hottest day in May has been broken twice this week, with stifling conditions on the tube in London. Photograph: Tolga Akmen/EPA

A temperature of 35.1C (95.2F) was recorded at Kew Gardens in London on Tuesday, the UK’s Met Office said, breaking the 34.8C record set a day earlier. The readings easily surpassed a previous record of 32.8C that was set in 1922 and equalled in 1944.

France, which was expecting local highs of 39C on Wednesday, also recorded its hottest May day ever on Tuesday, when the national heat index, an average of 30 readings around the country, hit 24.8C, surpassing Monday’s 24.6C – itself a record.

Météo-France, the national weather service, said a “heat dome” – with heat held in place by a high-pressure weather front – was producing temperatures up to 13C higher than customary for the time of year.

Seventeen of France’s 96 administrative departments, including Paris, were placed on an orange high temperature alert for Thursday, the second highest level, requiring the population to “be very vigilant and take precautions”. Another 29 were on a more moderate yellow warning.

Scientists have said that as the Earth warms, extreme heat events historically confined to high summer were becoming more frequent and more intense, as well as happening earlier and later in the year, putting more people in danger.

A woman in a town square in Madrid shelters from the sun under an umbrella
Temperatures in Spain could reach 40C, with heat usually seen in July arriving earlier in the year. Photograph: Pablo Garcia/The Guardian

“We know beyond a shadow of a doubt that events such as this have been made more likely and more severe due to climate change arising from our emissions of heat-trapping greenhouse gases,” said Peter Thorne, the director of climate research at Maynooth University in Ireland – where a record May high of 28.8C was recorded on Monday. “Nevertheless, many of the records being set, particularly in the UK and France, are mind-bogglingly crazy.”

French authorities on Tuesday reported at least seven deaths directly and indirectly linked to the high temperatures – two of competitors taking part in sporting events, and five drownings as many people sought relief at swimming spots. Authorities in Britain said four teenagers have drowned in England since Sunday.

In Spain, where temperatures could reach 40C this week, an orange weather alert was issued for the Basque Country amid predictions the northern region could reach 37C on Wednesday. Temperatures of 36C to 38C were forecast for southern regions, with a high of 38C in the south-western city of Badajoz.

Spain’s state meteorological office, Aemet, said temperatures more normally seen in July had already been recorded across the country, and the heat was “more characteristic of the dog days, the hottest period of the year”.

Rubén del Campo, an Aemet spokesperson, added: “Both this episode and the atmospheric pattern that’s causing it are part and parcel of climate change and of what’s been observed in recent years.”

Europe is indeed cooking in this late May—but so are parts of N Africa, E & S Asia, Central America, and S Florida. 100s of towns & cities have set record highs + record-warm lows for the month of May. My roundup: @climateconnections.bsky.social yaleclimateconnections.org/2026/05/west…

Bob Henson (@bhensonweather.bsky.social) 2026-05-27T18:20:19.463Z

Paris' brutal heatwave turns non-AC trains into ovens, hundreds gasp for breath and forced to step out. economictimes.indiatimes.com/news/new-upd… #FossilFuels #Collapse #Climate #France

The Final Report (@firehorse249791.bsky.social) 2026-05-26T08:25:47.980Z

This BBC article states that "climate change is believed to have played a role in such hot spells as this." Let me fix it:Climate change IS making these hot spells more likely and more dangerous. Scientists have been warning of this for decades.www.bbc.com/news/article…

Katharine Hayhoe (@katharinehayhoe.com) 2026-05-26T19:30:23.660Z

“Dropping worst-case climate scenario doesn’t reduce threat, scientists warn” | Article in @yenisafak.bsky.social: en.yenisafak.com/life/droppin…

Michael E. Mann (@michaelemann.bsky.social) 2026-05-27T15:48:16.305Z

Scientists are already embarking on a pre-livestream walk this week, ahead of the smorgasbord of live talks set for next week. More in this thread on how scientists can sign up for talks, and how citizens can pitch in by writing letters of support.

Bob Henson (@bhensonweather.bsky.social) 2026-05-27T15:38:02.853Z

"Proving climate science right" | Piece by @upenn.edu #PennToday about our recent @pnas.org article: penntoday.upenn.edu/news/penn-ar…

Michael E. Mann (@michaelemann.bsky.social) 2026-05-27T15:43:03.347Z

Climate crisis is accelerating antibiotic resistance across world, study says #Climate

Climate Tracker (@climate.skyfleet.blue) 2026-05-26T23:03:04.087Z

“Now, at the 11th hour, our best and final chance to avoid a fossil-fuelled collapse of global #climate system by mid-century has arrived, in the form of renewable energy & advanced battery technology”My take in today’s @irishexaminer.bsky.social www.irishexaminer.com/opinion/comm…

John Gibbons 🇵🇸 🇺🇦 🇪🇺 (@thinkorswim.bsky.social) 2026-05-27T06:48:51.265Z

Live virtual office hour on Thu, May 28 at 3pm PT! I'll cover a lot of ground, including yet more spring showers in CA (& a "pivoting" marine heatwave), an overview of our new paper on Western US precip extremes, & brief reflections on the RCP85 discourse.

Daniel Swain (@weatherwest.bsky.social) 2026-05-27T19:02:26.000Z

Kew Gardens recording 35.1ºC today breaks its previous May record in 1922 before this spell by NEARLY 5ºC and breaks its June maximum temperature record set in 1976 by 0.5ºC – this also beats the previous May UK maximum record by OVER 2ºC (32.8ºC, 1922/44). An incredible anomaly

MetJam (@metjam.co.uk) 2026-05-26T18:03:21.609Z

A strong Bermuda high with persistent southerly fetch funnels a plume of tropical moisture north into the Gulf. The main event starts this weekend and persists into next week. The details are fuzzy, but you can bet some folks along the Gulf Coast, from Louisiana to Florida will get 10” in 2 weeks.

Jeff Berardelli (@weatherprof.bsky.social) 2026-05-27T12:29:08.553Z

Round-the-clock renewable power is moving from theory to economics, according to a new report from the International Renewable Energy Agency. www.energylivenews.com/2026/05/26/r…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2026-05-27T09:45:10.310Z

US seeks to give weapons grade plutonium to start up for fuel.New York Times 26th May 2026www.nytimes.com/2026/05/26/c…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2026-05-27T09:42:40.749Z

Renewable energy is overtaking traditional power projects across Africa, industry leaders say abcnews.com/Business/wir…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2026-05-27T08:17:45.936Z

Net-zero-related industries are supporting more than 105,000 jobs in Scotland and contributing £10.2bn to the economy, according to industry research. www.bbc.co.uk/news/article…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2026-05-27T09:07:03.045Z

New analysis has found that net zero-related industries contribute £4 billion in Gross Value Added (GVA) and support over 41,300 jobsin Wales.businessnewswales.com/wales-net-ze…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2026-05-27T08:58:00.363Z

France EDF to start dismantling Fessenheim nuclear power plant on the border with Germany, following a string of safety failures.€1.4 billion project slated to take 22 years.www.france24.com/en/tv-shows/…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2026-05-27T09:30:42.845Z

Nuclear needs to build up to 8,000 SMRs just to catch up with wind and solar. By 2035, they might have 5. “And so, as a climate solution, by the time you did build 2000 SMRs, where do you think wind and solar is going to be?reneweconomy.com.au/nuclear-need…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2026-05-27T08:54:12.714Z

"Stop giving power to people who don't believe in science or worse than that, pretend they don't believe in climate change for their own self-interest." Harrison Ford There is no time to wait. #ActOnClimate #climate #energy #biodiversity #dumptrump

Mike Hudema (@mikehudema.bsky.social) 2026-05-26T18:07:04.959Z

Extreme heat and drought can be translated as a kind of overkill for complex life once thresholds are breached…Our biosphere is not just collapsing, it's literally cooked and evaporated…#earth #climate

(@umsonst.bsky.social) 2026-05-27T11:07:47.550Z

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