A southwesterly, very strong and very variable flow prevails over the whole area.
For Biarritz :
Warning moderate gale offshore.
We are 80% sure of the situation, because the atmosphere might be less unstable and showers rarer than forecast.
Overcast skies. Some showers morning and evening. In the evening, very cloudy skies to overcast.
Showers. SSW force 4 in the morning turning WSW force 3 in the evening. Gusts reaching 26 knots in the evening. Moderate sea becoming rough in the evening. Moderate, fairly long swell from WNW. Poor visibility becoming poor in the middle of the day then poor.