A northwesterly, moderate and mostly variable flow prevails over the whole area.
For Saint-Denis-d"Oléron :
No gale warning.
We are 80% sure of the situation, because the atmosphere might be less unstable and showers rarer than forecast.
Overcast in the morning, very cloudy with possibility of thunder storms in the afternoon. Showers all day. In the evening, very cloudy.
No precipitation. WSW force 5 in the morning turning WNW in the evening. Gusts reaching 26 knots in the middle of the day. Slight sea. Low, fairly long swell from W. Excellent visibility.