Europe's summer heatwaves cause at least 35,000 excess deaths, incomplete data shows
Preliminary data from about half of Europe indicates that over 35,000 excess deaths occurred during four consecutive heatwaves this summer. The combined death toll in Germany, France, and Spain already surpasses 25,000. Officials expect the final count to increase significantly after August figures are included.
Germany recorded its highest heat-related death toll since records began, with the Robert Koch Institute reporting roughly 14,000 deaths between early April and early August, including 9,600 in a single late-June week. Spain's Carlos III institute counted nearly 5,000 heat-attributed deaths, surpassing its previous 2022 record.
France's health agency reported 7,300 excess deaths through late July, though that figure relies on electronic death certificates covering only 80% of mortality. Because heat typically worsens existing cardiovascular or respiratory conditions rather than appearing as a direct cause, final attribution takes months, and many countries have not yet released August data.
The incomplete data suggests the true toll could be substantially higher once August figures and unexamined regions are included. Vulnerable populations—particularly the elderly and those with pre-existing health conditions—may face growing risks as heatwaves become more frequent and intense. Health systems across