A southeasterly, very strong and variable flow prevails over the North and the East of the basin. Over the South-West, a westerly gale is raging at sea.
For Saint-Brevin-Les-Pins :
Warning moderate gale offshore.
The reliability of the situation is fairly good.
For the night from Tuesday to Wednesday S wind force 3 continuing all night. Gusts reaching 18 knots in the early part of the night.
Slight sea. Low, fairly long swell from W. Good visibility becoming poor in the middle of the night then poor. Daytime of Wednesday 21 january : The unsettled weather will become more unpredictable as showers set in.
Very cloudy skies with short clear spells. Risk of showers in the morning, showers in the afternoon. In the evening, very cloudy.
Light showers. SSE force 4 in the morning becoming S force 5 in the middle of the day. Gusts reaching 32 knots in the middle of the day. Slight sea becoming moderate in the evening. Low, fairly long swell from W. Poor visibility becoming excellent in the middle of the day then excellent.