A westerly, moderate and very variable flow prevails over the whole area.
For San Sebastián :
No gale warning.
We are 75% sure of the situation, because the high pressure system could move in more quickly than forecast.
Very cloudy with risk of thunderstorms in the morning, storms developing in the afternoon. Risk of showers in the morning, light showers in the afternoon. In the evening, storms developing.
Showers. WSW force 2 turning N force 3 in the middle of the day then NNW. Gusts reaching 16 knots in the evening. Smooth to slight sea becoming slight in the middle of the day. Low, short swell from NW. Good visibility becoming good in the middle of the day then good.