For Château d"Oléron :
No gale warning.
We are 85% sure of the situation, because the atmosphere might be less unstable and showers more frequent than forecast.
Very cloudy skies becoming totally overcast during the afternoon. The risk of seeing rain will remain low. In the evening, very cloudy.
No precipitation. WSW force 4 in the morning temporarily force 5 in the middle of the day. Gusts reaching 27 knots in the middle of the day. Smooth sea. Low, fairly long swell from NW. Excellent visibility.