Overview
- Mélissa’s remnant low south of Iceland is channeling subtropical air from the Azores toward the British Isles and France, producing an unusually mild start to the week.
- The warmup begins Tuesday and peaks Wednesday, with 20°C widespread in the southwest and locally up to 25°C at the foot of the Pyrenees due to a foehn effect.
- City forecasts point to notable anomalies on the peak day, including roughly +5.2°C versus normal in Paris, about 23°C in Biarritz, 18°C in Marseille and 13°C in Strasbourg.
- Skies will be brighter from the Pyrenees to the eastern borders and the Mediterranean, while Brittany and Normandy keep clouds or showers and mistral and tramontane may gust to around 80 km/h.
- A cooler, wetter pattern returns from Thursday as an Atlantic disturbance crosses the country, bringing widespread rain, Alpine snow and temperatures easing toward near‑seasonal levels.