A northerly, strong and very variable flow prevails over the South-West of the basin. Over the North and the East, it is westerly, strong and very variable.
For Biarritz :
No gale warning.
The reliability of the situation is fairly good.
For the night from Wednesday to Thursday N force 1 turning ESE in the middle of the night then SSE. Gusts reaching 6 knots in the early part of the night.
Slight sea becoming moderate in the middle of the night. Low, short swell from NW then moderate, fairly long swell in the middle of the night then from NW. Good visibility becoming poor in the middle of the night then reduced by mist. Daytime of Thursday 17 september : Warning:reduced visibility early in the day.
Sunny spells with possibility of mist forming in the morning, cloudy spells, sometimes dense, in the afternoon. No precipitation. In the evening, cloud and long sunny periods.
No precipitation. S force 1 freshening WNW force 3 in the middle of the day then becoming NW. Gusts reaching 15 knots in the middle of the day. Moderate sea becoming slight in the evening. Moderate, fairly long swell from NW then low in the evening. Visibility reduced by mist becoming excellent in the middle of the day then excellent.