For Château d"Oléron :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Sun but cloud increasing in the morning, sunny in the afternoon. No precipitation. In the evening, skies with few clouds.
NW force 2 turning W force 3 in the middle of the day then WNW. Gusts reaching 17 knots in the middle of the day. Rippled sea. Low, short swell from WNW. Excellent visibility.