For Château d"Oléron :
No gale warning.
We are 85% sure of the situation, because the atmosphere might be less unstable and showers rarer than forecast.
Overcast in the morning, very cloudy in the afternoon. Some showers from late morning. In the evening, cloud and long sunny periods.
No precipitation. WSW force 4 in the morning turning NNW force 5 in the middle of the day. Gusts reaching 30 knots in the evening. Smooth sea becoming smooth to slight in the middle of the day. Low, short swell from NW. Excellent visibility.