A southwesterly, very strong and very variable flow prevails over the whole area.
For San Sebastián :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Sunny despite some cloudy spells but no rain. In the evening, clear skies.
SSE force 1 turning NNE force 2 in the middle of the day then SW. Gusts reaching 10 knots in the middle of the day. Rough sea becoming moderate in the evening. Moderate, long swell from NW. Good visibility becoming excellent in the middle of the day then excellent.