Overnight heat record in France repeats the deadliest pattern from 2003

Tarascon in southern France recorded a June nighttime low of 26.8°C—a record—on June 19, 2026. Elevated nocturnal temperatures prevent the body from cooling during sleep, a mechanism that amplified mortality during the August 2003 heatwave that killed an estimated 15,000 people, mostly elderly. Seven heat deaths already recorded by late May; figures will rise as epidemiological data accumulates. France's emergency systems, rebuilt since 2003, face a test: two major heatwaves within three weeks.