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 assessed at 90%.
For the night from Wednesday to Thursday SW force 1 turning ESE in the middle of the night then E force 2. Gusts reaching 6 knots at the end of the night.
Smooth to slight sea. Low, fairly long swell from WSW. Poor visibility becoming poor in the middle of the night then reduced by fog. Daytime of Thursday 21 may : Warning:reduced visibility early in the day.
Fog developing into low cloud during the morning, sunny in the afternoon. No precipitation. In the evening, skies with few clouds.
E force 2 in the morning temporarily SSE in the middle of the day. Gusts reaching 9 knots in the morning. Smooth to slight sea. Low, fairly long swell from W. Visibility reduced by fog becoming excellent in the middle of the day.