For San Sebastián :
No gale warning.
The reliability of the situation is very good.
Warm sun all day. In the evening, clear skies but atmosphere misty.
SSE force 3 in the morning turning SSW in the middle of the day. Gusts reaching 11 knots in the middle of the day. Moderate sea becoming rough in the middle of the day. Moderate, fairly long swell from SW. Excellent visibility becoming excellent in the middle of the day then reduced by mist.