The European heatwave of summer 2003 caused an estimated 70,000 or more excess deaths across 16 countries, with France alone recording around 15,000 deaths in August — the deadliest heatwave documented. Excess-mortality estimates vary by method, and the 2022 European summer (about 61,000 deaths) came close.
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The European heatwave of summer 2003 caused an estimated 70,000 or more excess deaths across 16 countries, with France alone recording around 15,000 deaths in August — the deadliest heatwave documented. Excess-mortality estimates vary by method, and the 2022 European summer (about 61,000 deaths) came close.
The highest estimated excess mortality attributed to a single heatwave event.
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Permanent ID limitsregistry.com/limits/LR-DEADLIEST-HEATWAVE
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Limits Registry. LR-DEADLIEST-HEATWAVE. Deadliest heatwave on record. 2026.