For Portonovo :
No gale warning.
We are 90% sure of the situation, because the cloud system may be more intense than predicted.
Skies changeable to very cloudy. No precipitation. In the evening, changeable skies becoming less cloudy.
No precipitation. WNW force 3 turning NNE force 2 in the middle of the day then S. Gusts reaching 13 knots in the morning. Smooth to slight sea becoming smooth in the middle of the day. Low, short swell from NE. Excellent visibility becoming excellent in the evening.