After the beautiful day, although a little uncertain, of Saturday, the showers will cross the country this Sunday. 10 departments are placed on orange vigilance due to the risk of thunderstorms. Temperatures will remain relatively high.
The weather on Sunday will be marked by a return of rain, even thunderstorms, from the northwest as from Provence according to Météo-France. At daybreak, the sky will be heavy over the northwest of the country. A few showers will circulate over Normandy, Ile-de-France and Hauts-de-France in the morning, sometimes accompanied by thunderclaps. Gradually the sky will also load in the southwest. 10 departments are placed in orange vigilance for thunderstorms: Charente, Charente-Maritime, Haute-Vienne, Dordogne, Gironde, Landes, Lot-et-Garonne, Gers, Pyrénées-Atlantiques, Hautes-Pyrénées.
The first showers will start in Aquitaine before midday and will strengthen and spread over the North-West in the afternoon. In New Aquitaine and western Occitania, thunderstorms will sometimes be strong with strong gusts of wind, intense rains and sometimes hail.
This rainy and stormy weather will extend in the evening to Languedoc. Stormy rains will still overflow the north of the country to the Belgian border. Brittany and Cotentin will be spared by thunderstorms, the weather will be cooler under a very cloudy sky with a few drops. The eastern part of the country will also remain out of the way and benefit from warm and sunny weather despite the arrival of cloud banks in the afternoon.
In Provence the coastal morning clouds will thicken and gain the hinterland and the southern Alps, driven by a strong east to south-easterly wind. Showers will start in the evening, before stormy degradation clearer overnight.
The wind, generally from the southerly sector, will blow hard over the country, particularly in the mountains. The gusts will reach 70 to 90 km / h in the foothills and the Pyrenean valleys, the south of Toulouse, the Massif Central, the Alps, around the Gulf of Lion and in the Rhône valley. We will observe more than 100 km / h on the relief of the Pyrenees. It will blow between 50 and 70 km / h in gusts in general elsewhere, a little more during strong thunderstorms.
The minimum temperatures will go from 8 to 14 degrees in general, up to 16 or 17 in Aquitaine. The maximums, down slightly, vary between 22 and 27 degrees in most regions without exceeding 16 to 22 in Brittany.