A northwesterly and variable flow prevails over the whole area.
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 13 knots in the middle of the night.
Smooth to slight sea. Low, short swell from WNW. Excellent 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. Low, short swell from W temporarily from N in the middle of the day. Poor visibility becoming excellent in the middle of the day.