For San Sebastián :
No gale warning.
The reliability of the situation is very good.
Fair weather with mostly clear skies. In the evening, skies with few clouds.
S force 2 freshening SW force 4 in the middle of the day then becoming SSW. Gusts reaching 18 knots from the middle of the day. Slight sea becoming moderate in the evening. Low, short swell from SW. Poor visibility becoming excellent in the middle of the day then reduced by mist.