A severe early-summer heatwave sweeping across western Europe has claimed seven lives in France, as record-breaking temperatures for May were recorded in both France and the United Kingdom, with forecasts indicating further increases on Tuesday.
Deaths and Drownings
French government spokesperson Maud Bregeon confirmed on TF1 television that seven deaths have been directly or indirectly linked to the heat. Among these, five were drownings, while two individuals died while participating in sporting events. On Sunday, a woman competing in a Hyrox fitness competition in Lyon succumbed to hyperthermia, and a 53-year-old man suffered a fatal heart attack during a 10km race in Paris. Additionally, sixteen people were hospitalised during another road race in the Paris suburb of Maisons-Alfort, with ten in critical condition. Three teenagers were among those who drowned in swimming accidents over the weekend, as many sought relief in beaches and rivers despite lifeguard supervision not commencing until July in most areas.
Record Temperatures
Meteo France reported that Monday was the hottest May day on record, with a national average temperature of 24.4C measured at 30 stations across the country, surpassing the previous record of 23.7C set in 1944. The highest reading of 37.1C was recorded near Hossegor in Les Landes, southwestern France. Temperatures across western France could exceed 36C on Tuesday. The UK's Met Office also recorded its hottest May day, with a temperature of 34.8C at Kew Gardens in southwest London, described as exceptional even for mid-summer. In Spain, widespread highs of 36-38C are expected to persist possibly until Friday in the Guadiana, Guadalquivir, and Ebro valleys, with some areas potentially reaching 40C.
Heat Alerts and Government Response
Eight of France's 96 administrative departments have been placed on an orange high-temperature alert, the second-highest level, requiring vigilance and precautions. Another 20 departments are under a moderate yellow warning. This marks the first activation of the national heat warning system in May since its introduction in 2004. Prime Minister Sebastien Lecornu convened a meeting of key ministers on Thursday to assess government preparations for heatwaves after over 350 weather stations across France recorded new monthly highs on Monday. In Italy's Lazio region, which includes Rome, authorities have imposed work restrictions for conditions with prolonged sun exposure between 12:30pm and 4pm, affecting farms, construction sites, and delivery services.
Climate Context
Christophe Cassou, a climate scientist, described the event as unprecedented, with a one in 1,000 chance of occurring in May under 1979-2025 climate conditions, and virtually impossible in the pre-industrial era. Meteo France attributed the heat dome to hot air from Morocco trapped under high pressure, warning that such events are likely to become more frequent, earlier, and more intense. Models indicate that June heatwaves are now about ten times more likely in Europe due to climate breakdown, with a similar trajectory for May. Researcher Robert Vautard noted that the extension of the heatwave season is characteristic of climate change, and similar heat events could eventually occur in April and October.
