A northeasterly and variable flow prevails over the South of the basin. Over the North, it is westerly, moderate and particularly variable.
For Saint-Brevin-Les-Pins :
No gale warning.
For the night from Tuesday to Wednesday NW force 3 in the early part of the night becoming NNW force 2. Gusts reaching 15 knots in the early part of the night.
Slight sea becoming smooth to slight in the middle of the night. Low, short swell from WNW. Good visibility becoming poor in the middle of the night then poor. Daytime of Wednesday 19 august : The weather will become more uncertain during the day.
Skies changeable to very cloudy. No precipitation in the morning, showers late in the day. In the evening, cloudy spells, sometimes dense.
Possibility of showers NW force 2 turning W force 3 in the middle of the day then WNW. Gusts reaching 16 knots in the evening. Smooth to slight sea becoming slight in the middle of the day. Low, short swell from W. Poor visibility becoming excellent in the middle of the day.