For Platja de Castelldefels :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Some fair-weather cumulus clouds. In the evening, light cloudy spells.
SSW force 3 in the middle of the day turning W force 2 in the evening. Gusts reaching 13 knots in the middle of the day. Slight sea. Low, short swell from SSW. Excellent visibility.