WorldBritain hit a record high temperature for June on Thursday as large parts of Western Europe remained in the grip of a deadly early summer heat wave that has killed dozens of people, disrupted power supplies, and shut schools and cultural landmarks.Heat expected to intensify in Germany, Austria and ItalyThomson Reuters · Posted: Jun 25, 2026 10:29 AM EDT | Last Updated: 1 hour agoListen to this articleEstimated 6 minutesThe audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results.Employees of the public order office run over water hoses spilling water to provide relief from the summer heat as part of Cologne's climate adaptation measures in Cologne, western Germany, on Thursday. (Ina Fassbender/AFP/Getty Images)Britain hit a record high temperature for June on Thursday as large parts of Western Europe remained in the grip of a deadly early summer heat wave that has killed dozens of people, disrupted power supplies, and shut schools and cultural landmarks. French and British authorities warned busy people to adapt their daily routines to avoid the risk of over-heating. France activated its highest level of health service mobilization, meaning non-urgent operations could be cancelled to focus on caring for those affected by the hot weather. Temperatures reached 36.4 C in southwestern England on Thursday, provisionally making it the hottest June day recorded in Britain, surpassing a record set just a day earlier, the Met Office said on X. Britain's Met Office extended a red heat alert covering a large area into Friday, the first time such warnings have been issued for three days in a row. A similar warning was issued for the Netherlands for Friday. Deadly 'Omega' heat wave breaks more temperature records in Europe“Significant disruption to daily life is likely and the public should take every effort to adapt their daily routines to cope with these levels of heat, which up to now have been extremely rare for the U.K.," said Andy Page, a chief meteorologist at the Met Office.Paris endured another sweltering day after temperatures in the French capital hit a June record of 40.9 C on Wednesday.WATCH | Sweltering heat grips onto much of western Europe:Record-breaking U.K. heat wave triggers closuresJune 24|Duration 1:02Britain recorded its highest temperature ever for June – reaching 38.8 C in southern England, as the ‘Omega’ heat dome hovers over much of western Europe.France implemented a number of measures against heat waves after one in 2003 caused nearly 15,000 excess deaths, with the elderly the hardest hit.This time around, active younger people were a big concern, said Emmanuel Grégoire, the mayor of Paris."Rather, it’s people aged between 50 and 70 who are generally in good health, but who think this is just a normal period and continue going about their usual activities as if nothing has changed. Really, protect yourselves," he told broadcaster TF1.The Dutch meteorological institute KNMI on Thursday also issued a rare red alert for extreme heat across almost the entire Netherlands for Friday. It said temperatures could soar to up to 40 C in certain places. Drowning deaths in France, GermanyAt least 48 people have died in France from drowning since the start of the heat wave while trying to cool off, authorities said, and three young children are known to have been killed by heat in cars in two separate incidents.Since the end of last week, more than 20 people across Germany have lost their lives in swimming-related accidents, the German Life Saving Association said in a statement to Reuters.In Italy, media reported that five people had died on Wednesday from heat-related incidents.The heat wave, expected to peak over the next three days, could endanger the health of up to 1.5 million Italian workers including builders, farmers and couriers, according to estimates by the Italian CGIL trade union and Greenpeace Italy.Several regions have banned outdoor work during the hottest times of the day, and the government this week said firms forced to pause work due to the heat could access funds for furloughed staff.People crowd the beach in Brighton, on the south coast of England, on Thursday during a heat wave. (Carlos Jasso/AFP/Getty Images)Changes introduced in France since the 2003 heat wave included checking in on the elderly regularly and offering those in a retirement home the chance to spend several hours a day in a room with air conditioning.Air conditioning remains relatively rare in Europe, but Asian makers of air conditioners, such as South Korea's Samsung Electronics, China's Midea and Japan's Mitsubishi Electric, are enjoying a boom in sales, with strong demand from countries such as France, Spain and Italy.The heat wave is being driven by ​a weather pattern known as an Omega block, pushing temperatures as much as 18 C above normal, according to the Reuters Climate Monitor.The phenomenon resembles the shape of the Greek letter Omega, with a bulbous middle trapping in heat over regions for extended periods, with cooler weather on its fringes. Heat waves and storms are being intensified by climate change."Europe’s savage heat wave has the fingerprints of the climate crisis all over it — it’s the latest price to pay for fossil fuel pollution baking our planet," United Nations climate chief Simon Stiell said. "Schools closing, the vulnerable dying, economies sweating: this is what the climate crisis looks like in practice, and it's just getting started."France sees its hottest day on record amid early heat wave in EuropeAt least 18 dead in France as much of Europe grapples with extreme heatFrench Education Minister Édouard Geffray said that 13,500 schools were closed or placed on special schedules on Thursday.More than 1,000 schools closed or were partly closed in Britain as the temperature in some classrooms climbed to over 40 C, and authorities worry about extreme heat on treeless playgrounds, with the end of term still a few weeks away for many.U.S. tourist Keaghan Cronin, playing with her children in sprinklers in Paris, said that was a nice spot, but it was just too hot."The [children are] very uncomfortable. We are actually going to leave a little early, because it's too hot. We're going to leave Paris early," she said.Sporting events affected in Germany, AustriaGermany's National Meteorological Service issued extreme heat warnings for a large area of western Germany, with temperatures expected to rise to 38 C on Thursday and 41 C on Friday and Saturday. A half marathon run scheduled for Sunday in the northern city of Hamburg was postponed.In neighbouring Austria, the national weather service issued a red heat warning for the northeast of the country, including Vienna, this weekend, when the temperature in the capital could hit a record 40 C.Formula One's governing body declared a heat hazard for the Austrian Grand Prix at Spielberg's Red Bull Ring in the south of the country this weekend.That requires teams to fit a driver cooling system, such as a liquid-cooled vest, though drivers are not obliged to use them and can take a ballast penalty instead.