Western Europe is enduring a record-breaking heatwave as a "heat dome" trapped soaring temperatures across the region, prompting widespread health warnings and disruptions. The extreme conditions are driven by a combination of atmospheric patterns and human-induced climate change, experts say, with temperatures exceeding historical highs in multiple countries.
On Wednesday, millions faced severe heat health alerts. In the United Kingdom, the Met Office issued a rare “red heat health” warning for much of central and southern England, along with Wales, ahead of forecasts projecting the highest June temperatures ever recorded in the country. While temperatures on Wednesday were expected to fall just short of 40 degrees Celsius (104 degrees Fahrenheit), authorities warned that the threshold could be crossed on Thursday—an event once deemed unimaginable. Mark Sidaway, deputy chief forecaster for the UK Met Office, emphasized the seriousness of the situation, highlighting likely health impacts extending beyond typically vulnerable groups.
France experienced some of the highest temperatures, with an average reading of 29.8 degrees Celsius on Tuesday across 30 weather stations, the warmest since records began in 1947. Large parts of the country, including northwestern Brittany and Paris, anticipated highs between 39 and 41 degrees Celsius on Wednesday. Approximately 44 million people in France are under the highest red alert level, with major tourist sites such as the Eiffel Tower and the Louvre adjusting visiting hours. Schools and public transportation networks in France and the UK have faced disruptions, with several English schools closing and many train services canceled or running at reduced speeds due to heat-related safety concerns, including risks to railway infrastructure.
Spain and Italy are also grappling with extreme temperatures. Spain broke several June heat records earlier in the week, while Italy’s Health Ministry issued red alerts for 16 cities, including Rome, Milan, Florence, and Turin. Temperatures in Florence could reach up to 41 degrees Celsius, with Milan forecast to see highs around 38 degrees Celsius. Italy has contended with heat for several days, impacting events such as Milan Fashion Week, where outdoor shows incorporated cooling measures like battery-operated fans and mist sprays.
Scientific assessments attribute the intensity of the heatwave in large part to climate change. A recently published study indicated that without human-induced warming, current temperatures would be 2 to 4 degrees Celsius lower. Jim Skea, head of the UN’s Intergovernmental Panel on Climate Change, noted that these temperatures surpass some previous scientific projections and warned that Europe will continue to face increasing extremes as global temperatures rise.
The World Health Organization’s Director-General, Tedros Adhanom Ghebreyesus, highlighted the compounded risks posed by heat and increased air pollution, urging governments to bolster health services to withstand climate-related stresses.
With forecasts projecting that over 350 million people across Europe will experience temperatures exceeding 30 degrees Celsius, the heatwave poses unprecedented challenges to infrastructure, public health, and daily life in a region largely unprepared for such extremes. Experts warn that heatwaves are becoming more frequent, longer, and hotter, necessitating urgent adaptation measures as climate change continues to alter weather patterns globally.