‘Unprecedented’ May Heatwave Bakes Western Europe as France and UK Break Records, While Experts Warn Indian Cities Are Poorly Prepared for Rising Temperatures

26 May 2026 | Paris, London, Madrid, New Delhi — Updated 22:15 GMT

Article Summary: A historic "heat dome" sends temperatures soaring 10-15C above normal across Western Europe, with France recording its hottest May day ever at 352 stations and the UK hitting 34.8C in London. In India, experts warn cities remain dangerously unprepared as Delhi sizzles above 45C and millions of informal workers suffer from a "recovery deficit" — unable to cool down at night. Meanwhile, New York City faces sudden flash floods as heavy rains overwhelm its aging sewer system. From Paris to Gurugram, the early arrival of extreme heat signals the growing global impact of climate breakdown.

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In France, the mercury hits 37.1C in the southwest. In the UK, Kew Gardens records 34.8C — the hottest May day in history. A "heat dome" trapped over Western Europe is turning spring into summer two months early. More than 350 French towns have broken all-time May temperature records.

In India, a different crisis simmers. As temperatures soar past 45C in Delhi, experts warn that cities across the region remain dangerously unprepared for worsening heatwaves. Millions of informal workers — vegetable vendors, construction labourers, delivery riders — are collapsing from exhaustion before their workday even begins.

From the sweltering streets of Paris to the cramped settlements of Gurugram, extreme heat is exposing a global failure to protect the most vulnerable.

PARIS/LONDON/MADRID/NEW DELHI – A historic and "premature" heatwave is shattering records across Western Europe, with France, the UK, and Spain experiencing May temperatures more typical of high summer. But as tourists flock to the Eiffel Tower under a 33C sun, a separate and more insidious heat crisis is unfolding thousands of miles away in South Asia — where experts warn that cities are failing to protect their most vulnerable residents.

France's national weather agency, Météo France, reported late Monday that 352 weather stations, primarily in the west of the country, recorded their highest-ever temperatures for May. The peak was an astonishing 37.1C (98.8F) registered near Hossegor in the Landes department. The national temperature average hit a provisional record of 24.4C, beating a previous high from 1944.

'One in 1,000 Chance': The Science Behind Europe's Heat

Christophe Cassou, a climate scientist, described the European event as "unprecedented," telling Le Monde that based on the climate from 1979 to 2025, such a heat event at this time of year had a one in 1,000 chance of occurring — and was "virtually impossible in the preindustrial era."

Météo France explained that a "heat dome" — a large area of persistent high pressure — is trapping hot air from Morocco over Western Europe. The agency warned that Europe should expect such events "to occur more and more often and earlier and earlier, and to be more and more intense." Robert Vautard, a climate researcher, told Agence France-Presse: "Eventually, we will be seeing similar heat events in April and October."

The UK's Met Office confirmed the country's all-time May record was broken when London's Kew Gardens hit 34.8C (94.6F). The hot spell is expected to last several more days, with forecasters warning that temperatures could exceed norms by 12C or 13C.

Spain Braces for 40C as 'Tropical Nights' Spread

Spain is enduring an even more prolonged assault. Rubén del Campo of the state meteorological office Aemet said the hot spell — which saw temperatures hit 38C in some southern areas over the weekend — is expected to continue through the week. "It could get even hotter on Thursday and Friday, with temperatures of at least 34C across most of the country," del Campo said.

Widespread highs of 36-38C are expected in the Guadiana, Guadalquivir and Ebro valleys between Wednesday and Friday. "In some of those areas, temperatures could reach 40C," del Campo added. Much of the country is also expected to experience "tropical nights," where nighttime temperatures do not drop below 20C (68F), depriving residents of the chance to cool down.

Heatwave Casualties and Alerts in Europe

The extreme heat has already claimed at least one life in France. Civil defense services said a man died during a 10km running race in the Paris suburb of Maisons-Alfort on Sunday after reportedly suffering a heart attack. Ten other runners were taken to hospital in critical condition.

Thirty-one of metropolitan France's 96 administrative departments have been placed on high-temperature alert, including eight on level orange — the second-highest alert level. It is the first time the country's national heat warning system has been activated during May since it was introduced in 2004.

Tourists viewing the Eiffel Tower from the Trocadero Gardens on a hot sweltering day in Paris, where the temperature approached 33C during an unprecedented May heatwave.

India's Silent Crisis: 'My Head Spins With the Heat'

While European tourists snap photos of the Eiffel Tower, millions of informal workers across South Asia are fighting a daily battle for survival against extreme heat that experts say is being ignored by ill-prepared cities.

This week, Delhi registered its hottest May day in the last two years, and the warmest May night in 14 years. Daytime temperatures have soared past 45C (113F). A new report by US-based People's Courage International (PCI), using research in Delhi, Dhaka, Kathmandu, Jakarta and Quezon City, has found that hotter nights, combined with the urban heat island effect — the trapping of heat inside dense cities — are leaving millions of informal workers exhausted before a new workday even begins.

For delivery riders, construction workers and street vendors living in cramped settlements with little ventilation or unreliable electricity, sleep itself is becoming difficult. The inability to rest and cool down is worsening heat-related illnesses, reducing productivity and pushing already vulnerable workers into deeper economic stress.

The crisis is worsening in South Asia as climate change is predicted to triple the chance of pre-monsoon heatwaves. Scientists say night-time temperatures are rising faster than daytime temperatures across much of the region, reducing the hours people once relied on to recover from extreme heat.

'Recovery Deficit': Workers Begin Each Day Already Depleted

Across Asia, the International Labour Organization estimates that more than 70% of the workforce are exposed to excessive heat at some point during their jobs, with informal workers among the most vulnerable. This has a big impact in countries like India, where nearly 90% of workers are employed in the informal economy.

The PCI report, based on interviews with more than 2,200 internal migrant workers across five cities, found nearly eight in 10 said extreme heat was disrupting their livelihoods or households. Workers reported losing wages because they could not work full shifts, spending more money on water, medicines and transport, and struggling with headaches, dizziness and fatigue during long workdays outdoors.

"Heat impacts are silent and generally creep up on workers," said Dwarka Rapti, a hotel owner and researcher. Workers reported impacts across their lives — including at home and work, on their commute, as well as on their mental health and sense of community.

Sarukh Kumar, 58, a roadside vegetable vendor in Gurugram on the outskirts of Delhi, spends hours every day pulling a three-wheeler rickshaw loaded with vegetables through dense traffic after buying produce from a wholesale market 7km away.

"Every day my head spins with the heat. But I have no option but to work for my family," said Kumar, who has four children. He lives with his wife and children in a cramped room with no ventilation except for a rusty fan. He said he wanted to buy a cooler this summer but could not afford one.

"I barely make Rp300-400 ($3-4) a day. Most of that goes in feeding my family," he said. "I keep some water with me and damp my gamcha [scarf]. That helps my head."

At night, Kumar's family often sleep on the open terrace of their building because the room becomes unbearably hot. "But even then, it takes me hours to fall asleep."

Experts Warn Cities Are 'Poorly Prepared' Globally

As Western Europe swelters and South Asia suffers, experts warn that cities across the world remain dangerously unprepared for the accelerating impacts of the climate crisis. Some governments, including Delhi's, have introduced heat action plans and advisories, water kiosks, early warning alerts and directions to reschedule outdoor work during peak afternoon heat. But researchers say most responses remain reactive and fail to directly address the needs of workers living and working in extreme heat.

Researchers describe this growing exhaustion as a "recovery deficit" where workers begin each day already physically depleted. Sleep deprivation, they say, is contributing not only to lower productivity and worsening health, but also to anxiety and emotional exhaustion.

Back in France, Météo France summarized the situation starkly: the current heat episode is "premature, remarkable and long" — three adjectives that may come to define the new normal across both continents.

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