For Saint-Denis-D"Oleron :
No gale warning.
For the night from Sunday to Monday NW force 4 in the early part of the night becoming force 3. Gusts reaching 17 knots in the early part of the night.
Slight sea. Low, fairly long swell from W. Excellent visibility. Daytime of Monday 24 august : The unsettled weather will become more unpredictable in the second half of the day.
Skies changeable to very cloudy. Some showers from late morning. In the evening, cloudy spells, sometimes dense.
Light showers progressively becoming less frequent. NW force 3 becoming WNW force 4 in the middle of the day then NW. Gusts reaching 18 knots in the evening. Slight sea. Low, fairly long swell from W. Excellent visibility.