Météo-France Extends Yellow Heatwave Alert to 18 Departments Including Paris Amid Early Exceptional Heat

Météo-France has announced the extension of the yellow heatwave alert to 18 departments across France, including Paris and its surrounding suburbs, as of May 25, 2026. This expansion covers much of the northwest quarter of France as well as the capital region, with temperatures forecasted to reach between 32°C and 35°C in many areas and up to 36°C in the southwest.

The heatwave is notable for its early arrival and intensity, with temperatures running 11 to 13 degrees Celsius above seasonal norms—a phenomenon not seen this early since the first heat alert system was established in 2004. Cities such as Rennes, Brest, Nantes, and Bordeaux are experiencing record-breaking temperatures for the end of May. This exceptional warmth is driven by a "heat dome," a meteorological setup trapping warm air originating from Morocco, traveling over the Iberian Peninsula, and held in place by a powerful high-pressure anticyclone.

The peak of this heatwave is expected on Tuesday and Wednesday, with some cooling predicted for northern departments by Thursday, while other regions may continue to endure high temperatures through the end of the week.

Beyond the weather specifics, climatologists highlight that the repeated occurrence of such intense heatwaves is a clear consequence of climate change, primarily fueled by fossil fuel combustion. They warn that events like this will grow more frequent, prolonged, and severe in the future.

Additional meteorological warnings include yellow alerts for thunderstorms in some central departments and other regions like Savoie and Isère experiencing separate weather vigilance.

This heatwave response underscores the early onset of high temperatures in 2026 and demonstrates the increasing challenges climate change poses to France’s weather stability and public safety.