Forecasts established in local time at18H | next update 21H
For the coastal zone From San Sebastian to Santander : No gale warning.
For the night from Wednesday to Thursday S wind force 1 continuing all night. Gusts reaching 4 knots all night on the area. To the Eand to the W of the area, S wind force 1. Fairly rough sea becoming rough at the end of the night. Low, fairly long swell from NW then moderate at the end of the night. Average visibility becoming good in the middle of the night then average. Daytime of Thursday 27 may : The atmosphere will remain unstable.
Skies changeable to very cloudy.Light showers all day.In the evening, cloudy spells, sometimes dense. Light showers progressively becoming less frequent. S force 1 in the morning turning NNW force 2 in the middle of the day. Gusts reaching 9 knots all day on the area. S force 1 in the morning turning NNW force 2 in the middle of the day. Rough sea. Moderate, fairly long swell from NW then low in the middle of the day then from NW. Average visibility temporarily in the middle of the day.