A northerly, very strong and very variable flow prevails over the West of the basin. Over the East, it is southeasterly, moderate and very variable.
For Gujan mestras :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Cloud and sun in the morning, very cloudy skies becoming totally covered in the afternoon. No precipitation. In the evening, overcast skies.
Light showers. SE force 3 turning SW force 2 in the middle of the day then N. Gusts reaching 14 knots in the morning. Smooth to slight sea becoming smooth in the middle of the day. Low, short swell from WNW. Visibility reduced by mist becoming excellent in the middle of the day then good.