Overview
- Temperatures surged 5–10°C above seasonal norms nationwide, with the South-West hottest under a strong southerly flow.
- Local highs approached 30°C in the Pays Basque and Béarn, including 29.5°C at Aïcirits-Camou-Suhast and up to 29.8°C reported at Trois-Villes.
- Météo-France placed roughly 15–16 departments under yellow wind vigilance as southerlies produced frequent 60–70 km/h gusts and up to ~90 km/h near relief.
- A subtropical air corridor linked to Atlantic depression Claudia and a Foehn effect on the Pyrénées drove the exceptional warmth.
- Saharan dust spread across large areas, tinting skies and degrading air quality, with forecasts indicating dust mixing with rain by Friday–Saturday and a sharp turn to much colder polar air early next week with an 8–10°C drop in maxima.