A westerly, moderate and variable flow prevails over the whole area.
For Saint-Brevin-Les-Pins :
No gale warning.
The reliability of the situation is fairly good.
For the night from Wednesday to Thursday WNW wind force 3 continuing all night. Gusts reaching 18 knots in the early part of the night.
Smooth to slight sea becoming slight at the end of the night. Low, short swell from W. Excellent visibility becoming poor in the middle of the night then poor. Daytime of Thursday 20 august : Improving during the day:the sky will clear.
Good clear periods alternating with cloudy spells, rather dense in the morning. No precipitation. In the evening, cloud and long sunny periods.
No precipitation. W wind force 4 continuing all day. Gusts reaching 24 knots in the middle of the day. Slight sea. Low, short swell from W. Poor visibility becoming excellent in the middle of the day.