A northerly, weak and particularly variable flow prevails over the South and the West of the basin. Over the North-East, it is westerly, weak and particularly variable.
For Castro Urdiales :
No gale warning.
The reliability of the situation is poor.
For the night from Monday to Tuesday S force 1 turning SW force 2 in the middle of the night then S. Gusts reaching 11 knots in the middle of the night.
Smooth to slight sea. Low, fairly long swell from NNW. Poor visibility becoming poor in the middle of the night then excellent. Daytime of Tuesday 15 september : The weather will be good.
Fair weather with mostly clear skies. In the evening, relatively clear skies becoming changeable.
Chance of light rain. W force 3 turning NW force 4 in the middle of the day then becoming force 3. Gusts reaching 18 knots in the middle of the day. Smooth to slight sea temporarily slight in the middle of the day. Low, fairly long swell from NW. Good visibility becoming excellent in the middle of the day then good.