A westerly, strong and mostly variable flow prevails over the whole area.
For Biscarrosse :
Warning moderate gale offshore.
We are 75% sure of the situation, because hail may not be as easy to predict.
Storms developing in the morning, very cloudy with possibility of thunder storms in the afternoon. Lots of heavy hailstorms. In the evening, very cloudy with risk of storms.
Showers. WSW force 6 in the morning turning WNW force 5 in the middle of the day. Gusts reaching 39 knots in the morning. Rough to very rough sea becoming rough in the evening. Moderate, fairly long swell from WNW. Good visibility becoming excellent in the middle of the day.