For Portonovo :
No gale warning.
The reliability of the situation is assessed at 90%.
Clouds dispersing during the morning, sunny in the afternoon. No precipitation. In the evening, clear skies.
NE force 3 turning N in the middle of the day then NNW. Gusts reaching 19 knots in the middle of the day. Slight sea becoming smooth to slight in the middle of the day then smooth. Low, short swell from NE. Excellent visibility.