A westerly, strong and very variable flow prevails over the whole area.
For Saint-Brevin-Les-Pins :
Warning moderate gale offshore.
The reliability of the situation is fairly good.
For the night from Tuesday to Wednesday SSW force 4 in the early part of the night turning W force 5. Gusts reaching 29 knots at the end of the night.
Smooth to slight sea becoming slight at the end of the night. Low, fairly long swell from WSW. Excellent visibility. Daytime of Wednesday 21 october : The sky will remain changeable.
Bright spells increasing during the morning, cloud and sun in the afternoon. Risk of showers in the morning, possibility of showers in late afternoon. In the evening, good clear periods but cloud building.
Chance of light rain. WNW wind force 5 continuing all day. Gusts reaching 33 knots in the middle of the day. Moderate sea. Low, fairly long swell from W. Excellent visibility.