A northerly and mostly variable flow prevails over the South-West of the basin. Over the South-East, it is easterly, weak and particularly variable. Over the North, it is westerly, moderate and variable.
For Biarritz :
No gale warning.
For the night from Saturday to Sunday SSE wind force 1 continuing all night. Gusts reaching 4 knots all night.
Moderate sea. Moderate, fairly long swell from NW. Excellent visibility becoming excellent in the middle of the night then good. Daytime of Sunday 20 september : The weather will be good.
Fair weather with mostly clear skies. In the evening, light cloudy spells.
S force 1 in the morning turning NW force 2 in the middle of the day. Gusts reaching 8 knots in the middle of the day. Moderate sea becoming slight in the middle of the day. Moderate, fairly long swell from NW then low in the middle of the day then from NW. Good visibility becoming excellent in the middle of the day then excellent.