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France’s Second Summer Heatwave Spreads to 42 Departments as Temperatures Soar to 42°C

After spreading across 42 departments, the heatwave shows signs of further strengthening into early week under long-term warming trends.

Des passants se protègent du soleil avec des éventails, le 1er juillet 2025 à Paris
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Overview

  • Météo-France placed 42 departments under orange “canicule” alert on Sunday, covering nearly the entire southern half of the country.
  • Temperatures are forecast to hit 42°C in Nîmes and surpass 40°C in Perpignan, Bordeaux and Toulouse on Sunday.
  • SNCF has canceled several round-trip services on the Bordeaux-Marseille and Paris-Limoges-Toulouse lines to prevent potential air-conditioning failures in older trains.
  • Wildfire risk remains elevated along the Mediterranean rim, with Vaucluse classified as very high and ten other departments at high risk.
  • This second heatwave is the 51st recorded by Météo-France since 1947 as France has warmed about 1.7°C since preindustrial times, illustrating the growing link between global warming and extreme heat frequency.