For Portonovo :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Little cloud in the morning, sunny despite some high cloud in the afternoon. No precipitation. In the evening, skies with few clouds.
SE force 3 becoming force 4 in the middle of the day then SSE. Gusts reaching 24 knots from the middle of the day. Smooth to slight sea. Low, short swell from NE. Excellent visibility.