A southerly, moderate and very variable flow prevails over the whole area.
For Saint-Brevin-Les-Pins :
No gale warning.
The reliability of the situation is fairly good.
For the night from Wednesday to Thursday W force 2 turning NE force 1 in the middle of the night then ENE force 2.
Slight sea becoming smooth to slight in the middle of the night. Low, fairly long swell from WSW. Poor visibility becoming reduced by fog in the middle of the night then reduced by fog. Daytime of Thursday 21 may : Warning:reduced visibility early in the day.
Fog giving way to sun in early morning, sunny in the afternoon. No precipitation. In the evening, skies with few clouds.
E force 3 in the morning becoming ESE force 2 in the evening. Gusts reaching 13 knots in the middle of the day. Smooth to slight sea. Low, fairly long swell from W. Visibility reduced by fog becoming excellent in the middle of the day.