A northeasterly, weak and very variable flow prevails over the South of the basin. Over the North, it is northwesterly, moderate and particularly variable.
For Saint-Brevin-Les-Pins :
No gale warning.
The reliability of the situation is poor.
For the night from Tuesday to Wednesday NW force 3 becoming NNW force 2 in the middle of the night then NE. Gusts reaching 13 knots in the middle of the night.
Smooth sea. Low, short swell from W. Excellent visibility becoming poor in the middle of the night then reduced by fog. Daytime of Wednesday 19 august : Warning:reduced visibility early in the day.
Sunny spells with possibility of mist forming in the morning, cloud and sun in the afternoon. No precipitation. In the evening, light cloudy spells.
N force 2 turning W force 3 in the middle of the day then WNW. Gusts reaching 17 knots in the evening. Smooth sea becoming smooth to slight in the middle of the day. Low, short swell from W. Visibility reduced by fog becoming excellent in the middle of the day.