A westerly, very strong and mostly variable flow prevails over the whole area.
For Pornichet : Warning moderate gale offshore.
We are 80% sure of the situation, because the atmosphere might be less unstable and showers rarer than forecast.
Very cloudy. But clear spells will become more and more widespread.Light rain will begin to fall in late morning, gradually dying out.In the evening, relatively clear skies becoming changeable. SW force 4 becoming WSW force 5 in the middle of the day then WNW. Gusts reaching 33 knots in the middle of the day. Slight sea. Low, fairly long swell from W. Excellent visibility.