A southwesterly, moderate and very variable flow prevails over the whole area.
For Saint-Brevin-Les-Pins :
No gale warning.
The reliability of the situation is poor.
For the night from Wednesday to Thursday WSW force 1 turning NNE in the middle of the night then E force 2. Gusts reaching 6 knots at the end of the night.
Slight sea. Low, fairly long swell from W. Visibility reduced by mist 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 2 in the morning becoming force 3 in the evening. Gusts reaching 12 knots in the evening. Slight sea becoming smooth to slight in the evening. Low, fairly long swell from W. Visibility reduced by fog becoming excellent in the middle of the day.