For Château d"Oléron :
No gale warning.
The reliability of the situation is assessed at 90%.
Fair weather with mostly clear skies. In the evening, clear skies.
E force 3 in the morning turning NE in the middle of the day. Gusts reaching 13 knots in the evening. Smooth to slight sea. Low, short swell from NW then from ESE in the evening. Excellent visibility becoming excellent in the middle of the day.