A northerly, weak and very variable flow prevails over the South-East of the basin. Over the West and the North, it is southwesterly, strong and very variable.
For Saint-Brevin-Les-Pins :
No gale warning.
The reliability of the situation is assessed at 90%.
For the night from Thursday to Friday NNW force 3 in the early part of the night becoming force 2. Gusts reaching 14 knots in the early part of the night.
Smooth sea becoming smooth to slight at the end of the night. Low, short swell from W. Excellent visibility becoming good in the middle of the night then poor. Daytime of Friday 18 september : The weather will be good.
Fair weather with mostly clear skies. In the evening, cloudy spells, sometimes dense.
No precipitation. NNW force 2 in the morning turning W force 3 in the middle of the day. Gusts reaching 15 knots in the middle of the day. Smooth to slight sea becoming slight in the evening. Low, short swell from W. Poor visibility becoming excellent in the middle of the day.