For Château d"Oléron :
No gale warning.
The reliability of the situation is assessed at 90%.
Dense and persistent fog in the morning, very cloudy in the afternoon. No precipitation. In the evening, very cloudy.
No precipitation. ESE force 2 becoming SE force 3 in the middle of the day then force 4. Gusts reaching 21 knots in the evening. Rippled sea. Low, long swell from NW. Visibility reduced by dense fog becoming poor in the middle of the day then excellent.