France Records a Record-Breaking Summer of Heatwaves Amid Heavy Human and Environmental Losses

France endured 53 days affected by heatwaves during summer 2026, the highest figure recorded since national measurements began in 1900. The total far exceeded the previous record of 33 days, set in 2022, according to data from Météo-France.

Météo-France director Virginie Schwarz described the season as “exceptional” as periods of intense heat followed one another and affected increasingly broad areas. The heatwaves unfolded in three main phases.

The strongest period began from June 17 to June 30. High temperatures returned from July 4 to July 19, followed by a third heatwave from July 28 to August 19. France also recorded an unprecedented number of instances in which temperatures exceeded 40 degrees Celsius.

The consequences extended beyond climate indicators. A provisional assessment linked the heatwaves to more than 7,300 additional deaths. The report compares the toll with the summer of 2003, one of the deadliest hot seasons in French history, though the provided account does not give the full comparison.

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Exceptional