Environment & Climate

Repeated heat waves break records across Western Europe through summer 2026

Multiple extreme heat waves have strained infrastructure, disrupted transit, and been linked to an estimated 10,000 excess deaths across the region.

Updated Aug 24, 2026 · 00:32 UTC1 reports

The short version

Western Europe experienced five separate heat waves between May and August 2026, setting regional and national temperature records.
The sustained high temperatures damaged transit infrastructure, intensified drought, and disrupted local power and water supplies.
Preliminary reports associate the prolonged heat with roughly 10,000 excess deaths across multiple European nations.

Western Europe experienced five distinct heat waves between May and mid-August 2026, with temperatures exceeding 40°C (104°F) over wide areas.[NASA News]
Temperature milestones included London reaching 35.1°C on May 26 to break its previous May record by 2.3°C, and Bordeaux hitting 42.5°C on June 24.[NASA News]
According to the European Union's Copernicus climate monitoring service, combined June and July temperatures in Western Europe were the warmest on record.[NASA News]
The persistent heat buckled train tracks and roadways, sparked wildfires, lowered river levels, and interrupted water, agriculture, and energy networks.[NASA News]
International Energy Agency figures indicate that only 23 percent of European residences have air conditioning, compared to 90 percent in the United States.[NASA News]

The precise human toll remains preliminary, with early reporting estimating that heat may be linked to roughly 10,000 excess deaths across the UK, France, Germany, and Belgium.[NASA News]