A southeasterly, moderate and very variable flow prevails over the whole area.
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.
Good clear periods alternating with cloudy spells, rather dense in the morning. No precipitation. In the evening, skies with few clouds.
ESE force 3 in the morning turning ENE force 4 in the evening. Gusts reaching 18 knots in the middle of the day. Slight sea. Low, fairly long swell from NW. Good visibility becoming excellent in the middle of the day.