A westerly, moderate and very variable flow prevails over the whole area.
For Saint-Brevin-Les-Pins :
No gale warning.
We are 75% sure of the situation, because the high pressure system could move in more quickly than forecast.
For the night from Wednesday to Thursday NNE force 3 weakening force 1 in the middle of the night then becoming WNW. Gusts reaching 12 knots in the early part of the night.
Smooth to slight sea. Low, fairly long swell from WSW. Excellent visibility becoming good in the middle of the night then good. Daytime of Thursday 17 september : The sky will remain changeable.
Sun but cloud increasing in the morning, very cloudy skies becoming totally covered in the afternoon. Risk of some spots of rain in the morning, drizzle in late afternoon. In the evening, clear periods developing.
Light showers progressively becoming less frequent. SW force 3 becoming WSW force 4 in the middle of the day then W. Gusts reaching 20 knots from the middle of the day. Smooth to slight sea. Low, fairly long swell from WSW. Good visibility becoming excellent in the middle of the day then good.