A heatwave is set to sweep across most of France beginning Monday, September 14, with temperatures climbing above 30°C in nearly two-thirds of the country by Tuesday, according to Météo-Villes. This weather event is expected to bring significantly higher temperatures to many regions, with cities like Perpignan potentially reaching 33°C, Montpellier up to 35°C, and Toulouse hitting 36°C. Other areas such as Bourges, Tours, and Vichy are also expected to experience temperatures between 31°C and 34°C, while Paris may see temperatures rise to 31°C. However, not all parts of France will be affected equally. In the Norman and Breton regions, the heat will be less intense. For example, Cherbourg is expected to have a maximum temperature of 23°C, and Brest will remain cooler, with temperatures not exceeding 21°C. In Brest, the sky will be somewhat cloudy, and in the Hauts-de-France region, a veiled sky is forecast, indicating more cloud cover and potentially milder conditions compared to the rest of the country. The heatwave is expected to move out of France by Wednesday, as cooler oceanic air begins to return. This cooler air will remain over the country until Friday, offering a brief respite from the high temperatures. However, by the weekend, higher temperatures are likely to return, bringing the possibility of another heatwave or extended warm conditions. This pattern of rising and falling temperatures is typical during late summer and early autumn in France, as the country transitions from the warmest part of the year to the cooler months. Weather services like Météo-France and Météo-Villes closely monitor these changes to provide accurate forecasts and warnings for the public.