A northerly and mostly variable flow prevails over the whole area.
For Viana do Castelo : Warning strong breeze offshore.
For the night from Friday to Saturday NNE wind force 3 continuing all night. Gusts reaching 15 knots in the early part of the night.
Slight sea. Low, fairly long swell from NW. Excellent visibility. Daytime of Saturday 22 august : The weather will be good.
Fair weather with mostly clear skies.In the evening, light cloudy spells. N force 3 becoming NNW force 4 in the middle of the day then N. Gusts reaching 18 knots in the evening. Slight sea. Low, fairly long swell from NW. Excellent visibility.