High 1025 hPa centered on the North-West of Spain moving at 23 knots to the North-East to be centered on the North of the Bay of Biscay.
For Saint-Denis-d"Oléron :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Cloudy spells, dense at times in the morning, sunny in the afternoon. No precipitation. In the evening, clear skies.
WSW force 4 becoming force 3 in the middle of the day then NW force 2. Gusts reaching 17 knots in the morning. Slight sea. Low, fairly long swell from NW. Excellent visibility becoming good in the evening.