For Château d"Oléron :
No gale warning.
We are 80% 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. Light showers progressively dying out in the morning, no precipitation in the afternoon. In the evening, skies with few clouds.
NW force 3 becoming force 4 in the middle of the day then WNW. Gusts reaching 24 knots in the evening. Smooth sea. Low, short swell from WSW. Poor visibility becoming excellent in the middle of the day.