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Half of Europe faced very strong heat stress this summer, EU scientists say

By Thomson Reuters Oct 1, 2026 | 9:15 PM

By Kate Abnett

BRUSSELS, Oct 2 (Reuters) – Just over half of Europe experienced “very strong” levels of heat stress at ​times this summer, exposing people ‌in a record-high share of the continent to the health risks of extreme heat, the European Union’s Copernicus Climate Change Service (C3S) said on ‌Friday.

• ​The 52% of the ⁠continent exposed to ⁠very strong heat stress this summer was the highest on record, C3S said

• Heat stress occurs when high temperatures ​and humidity mean the body cannot cool itself through sweating

• Symptoms include ⁠increased heart rate, nausea, ⁠dizziness and heat stroke — a ​potentially life-threatening condition

• Copernicus defines “very strong” heat ​stress as conditions that feel like ‌a temperature of at least 38 degrees Celsius (100 F)

• Western Europe experienced its hottest summer since records began, recording “very ⁠strong” heat stress on 13 days

• Extreme heat poses particular health risks to outdoor workers, the ⁠elderly, ‌and people with conditions like ⁠cardiovascular diseases and diabetes

• Europe’s ​rivers ‌recorded their lowest flows this ​summer in ⁠more than three decades, C3S said

• Human-caused climate change has made Europe the world’s fastest-warming continent, according to the World Meteorological Organization

(Reporting by Kate Abnett, Editing by ​Rosalba O’Brien)