A westerly, very strong and particularly variable flow prevails over the whole area.
For Biarritz :
Warning moderate gale offshore.
The reliability of the situation is assessed at 85%.
Skies changeable to very cloudy. Showers will gradually become less frequent during the afternoon. In the evening, cloudy spells, sometimes dense.
Light showers progressively becoming less frequent. SW force 4 turning W force 5 in the middle of the day then WNW force 6. Gusts reaching 42 knots in the evening. Rough to very rough sea. Moderate, long swell from WNW. Excellent visibility.