A northeasterly, moderate and variable flow prevails over the whole area.
For Portonovo :
Warning strong breeze offshore.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Sunny becoming changeable in the afternoon. The risk of seeing rain will remain low. In the evening, cloudy spells, sometimes dense.
Possibility of showers NE force 2 in the morning temporarily WNW in the middle of the day. Gusts reaching 21 knots in the evening. Smooth sea. Low, fairly long swell from W. Excellent visibility.