For Castro Urdiales :
No gale warning.
For the night from Tuesday to Wednesday NNW force 1 in the early part of the night turning SW. Gusts reaching 7 knots in the early part of the night.
Slight sea. Low, fairly long swell from NW. Excellent visibility becoming good in the middle of the night. Daytime of Wednesday 26 august : The unstable weather will die away during the day.
Good clear periods alternating with cloudy spells, sometimes dense. Light showers progressively dying out in the morning, possibility of showers in the afternoon. In the evening, cloudy spells, sometimes dense.
Light showers. SW force 1 turning N force 2 in the middle of the day then NNE. Gusts reaching 9 knots in the middle of the day. Slight sea temporarily smooth to slight in the middle of the day. Low, fairly long swell from NNW. Good visibility becoming excellent in the middle of the day then excellent.