A westerly, strong and mostly variable flow prevails over the whole area.
For Pornichet :
Warning strong breeze offshore.
We are 80% sure of the situation, because the atmosphere might be less unstable and showers rarer than forecast.
Skies very cloudy, risk of some thundery outbreaks. Showers all day. In the evening, very cloudy with risk of storms.
Showers towards the end of the night. WSW force 4 in the morning temporarily force 5 in the middle of the day. Gusts reaching 28 knots in the middle of the day. Slight sea. Low, fairly long swell from SSW. Excellent visibility.