For Portonovo :
No gale warning.
The reliability of the situation is assessed at 90%.
Sunny despite some high cloud in the morning, sunny in the afternoon. No precipitation. In the evening, clear skies.
WNW force 3 turning NNW in the middle of the day then NW force 2. Gusts reaching 16 knots in the morning. Smooth sea becoming rippled in the evening. Low from N then from N in the evening. Excellent visibility.