52% of Europe's Population Experienced Severe Heat Stress in Summer 2026

The European Union’s Copernicus Climate Change Service reported that 52% of Europe’s population experienced very severe heat stress during the summer, which saw an exceptional heatwave this year, with apparent temperatures exceeding 38 degrees Celsius. Samantha Burgess, from the service’s management, said at a press conference: “A key feature of 2026 is that the heat was exceptional not only in its intensity but also in its geographic extent.” She added that four of the ten strongest heatwaves in Europe occurred in the past summer alone, and the heatwave of August 2003 remains the most severe ever recorded. The summer of 2026 was the third hottest on record in Europe and the hottest in Western Europe, with several countries recording their highest-ever temperatures. Heat stress occurs when the body’s natural cooling systems become overwhelmed, causing symptoms that range from dizziness and headaches to organ failure and death. Driven by climate change, Europe—the world’s fastest-warming continent—has endured a continuous series of heatwaves that began unusually early in spring, breaking temperature records and causing tens of thousands of additional deaths.