A southwesterly, very strong and variable flow prevails over the whole area.
For Donostia / San Sebastián :
No gale warning.
The reliability of the situation is assessed at 95%.
Changeable skies becoming fairly cloud-free in the morning, sunny in the afternoon. No precipitation. In the evening, clear skies.
SE force 1 becoming force 2 in the middle of the day then S force 4. Gusts reaching 25 knots in the evening. Moderate sea. Moderate, long swell from NW. Good visibility becoming excellent in the middle of the day.