Switzerland Grapples with Deadly June Heatwave and Braces for More
The June 2026 heatwave led to a statistically significant increase in deaths among people over 65. As the country faces warnings of another heatwave and heightened wildfire risks, a closer look at the data reveals the human cost of extreme weather.

Key Takeaways
- The mortality rate for individuals over 65 was significantly higher than projected during the final week of June 2026.
- Air conditioning units have sold out across Switzerland as citizens prepare for a second consecutive heatwave.
- Wildfire risks in Switzerland typically peak after long dry periods combined with summer heatwaves.
- Europe has been warming faster than any other continent over the past three decades.
By The Numbers
They Said
"The mortality rate for over-65-year-olds was higher than projected for the week of 22 to 28 June."
"Switzerland will swelter in another wave of extremely hot weather in coming days as air conditioning units sell out."