An easterly and mostly variable flow prevails over the East of the basin. Over the North-West, it is southerly, strong and mostly variable. Over the South-West, it is northwesterly and weak.
For Zumaia :
Warning strong breeze offshore.
The reliability of the situation is assessed at 90%.
Clear skies. In the evening, clear skies.
S force 4 in the middle of the day becoming SSE force 5 in the evening. Gusts reaching 39 knots in the evening. Slight sea. Low, fairly long swell from NW. Excellent visibility.