Overview
- From Wednesday, Météo-France forecasts stable, dry conditions across three-quarters of the country that will lift daytime highs to around 30 °C.
- Highs will hover near 30 °C in Nouvelle-Aquitaine on Thursday and rise to 32–33 °C on Friday, with the 35 °C threshold possible in localized pockets of the southwest.
- Forecasts diverge on the surge’s intensity and duration, as La Chaîne Météo and international models such as Gem and Icon predict more widespread readings near 35 °C by the weekend.
- Ongoing vegetation dryness means that rising temperatures without rain will elevate wildfire danger nationwide, even as easing winds reduce very high-risk zones along the Mediterranean.
- The midweek warmup follows a 16-day canicule from June 19 to July 4—the longest heatwave since 2003—and a brief autumnal cooldown earlier this week.