An easterly, very strong and very variable flow prevails over the whole area.
Für Pornichet :
No gale warning.
We are 70% sure of the situation, because the high pressure system could move in more quickly than forecast.
Very cloudy skies to overcast. Risk of showers in the early hours. In the evening, overcast and misty, reduced visibility.
Light showers. ESE force 4 in the middle of the day becoming SE force 3 in the evening. Gusts reaching 19 knots in the middle of the day. Smooth to slight sea becoming slight in the evening. Low, fairly long swell from WSW. Excellent visibility becoming reduced by mist in the evening.