A northerly and very variable flow prevails over the whole area.
For Saint-Denis-D"Oleron :
No gale warning.
For the night from Saturday to Sunday NW force 4 becoming NNW force 3 in the middle of the night then N. Gusts reaching 16 knots in the early part of the night.
Slight sea. Low, short swell from WNW. Excellent visibility. Daytime of Sunday 16 august : The unsettled weather will become more unpredictable in the second half of the day.
Good clear periods alternating with cloudy spells, sometimes dense. Some showers from late morning. In the evening, clear periods developing.
Possibility of showers N force 3 turning WNW in the middle of the day then NW force 4. Gusts reaching 17 knots in the evening. Slight sea. Low, short swell from WNW. Excellent visibility becoming excellent in the middle of the day.