A northerly, weak and very variable flow prevails over the South of the basin. Over the North-East, it is easterly, moderate and very variable. Over the North-West, it is southerly, moderate and very variable.
For Castro Urdiales :
No gale warning.
The reliability of the situation is poor.
For the night from Wednesday to Thursday W force 3 in the early part of the night becoming WSW force 2. Gusts reaching 11 knots in the early part of the night.
Smooth to slight sea becoming smooth in the middle of the night. Low, short swell from NNW. Good visibility becoming reduced by mist in the middle of the night. Daytime of Thursday 13 august : Warning:reduced visibility early in the day.
Sunny spells with possibility of mist forming in the morning, sunny in the afternoon. No precipitation. In the evening, skies with few clouds.
W force 2 turning NNW force 3 in the middle of the day then NW. Gusts reaching 12 knots in the evening. Smooth sea becoming smooth to slight in the middle of the day. Low, fairly long swell from NW. Visibility reduced by mist becoming poor in the middle of the day then poor.
