An easterly and variable flow prevails over the South of the basin. Over the North, it is southerly, weak and very variable.
For Saint-Brevin-Les-Pins :
No gale warning.
The reliability of the situation is fairly good.
For the night from Monday to Tuesday NE force 2 in the early part of the night becoming ENE force 3. Gusts reaching 11 knots.
Smooth sea becoming smooth to slight at the end of the night. Low, fairly long swell from WSW. Excellent visibility. Daytime of Tuesday 22 september : The weather will be good.
Warm sun all day. In the evening, clear skies.
ENE wind force 3 continuing all day. Gusts reaching 16 knots in the middle of the day. Smooth to slight sea becoming smooth in the middle of the day. Low, fairly long swell from WNW. Excellent visibility.