An Unusually Early Heat Wave Breaks Temperature Records Across Western Europe

Western Europe is enduring an early and intense heat wave, with temperatures shattering records across multiple countries. The U.K. recorded its hottest May temperatures on record, hitting 95.2°F at Kew Gardens in London on May 25, 2026, following a 95°F reading the prior day—both more than 30°F above average. France and Spain also experienced extreme heat, with temperatures nearing or exceeding 90°F, disrupting daily life and outdoor activities. The heat wave has been linked to at least seven heat-related deaths in France, including five drownings, as sweltering temperatures arrived before lifeguards typically began patrols at popular beaches. A French government spokesperson confirmed the deaths, highlighting the dangers of the early-season heat. The event has also affected major sporting events, including the French Open in Paris, where players reported altered gameplay due to the heat and used ice bags to cool down between sets. Experts attribute the extreme temperatures to a heat dome trapping warm air from northern Africa over Europe, a phenomenon made more likely by climate change. Christophe Cassou, a climate scientist, stated the event had a one-in-1,000 chance of occurring under current climate conditions and would have been virtually impossible in the preindustrial era. The heat wave is also exacerbating infrastructure challenges, such as strained water systems, as highlighted in a recent U.K. government-backed report warning of the nation’s vulnerability to climate risks. Spain and Portugal are expected to face the worst of the heat dome later in the week, with temperatures forecast to exceed 100°F. Meanwhile, the U.K. has issued heat health alerts across England until May 29, as the early heat wave underscores the growing frequency and intensity of extreme weather events in Europe. The region is warming roughly twice as fast as the global average, according to climate data from the Copernicus Climate Change Service.