An easterly and very variable flow prevails over the South and the East of the basin. Over the North-West, it is northwesterly, weak and variable.
For Castelldefels :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Fair weather with mostly clear skies. In the evening, skies with few clouds.
NE force 3 in the morning turning E in the middle of the day. Gusts reaching 18 knots in the middle of the day. Smooth to slight sea. Low, short swell from SE. Excellent visibility becoming excellent in the evening.