For Castelldefels :
No gale warning.
For the night from Monday to Tuesday S force 1 turning SW in the middle of the night then WSW. Gusts reaching 7 knots in the early part of the night.
Smooth to slight sea. Low, fairly long swell from ESE. Excellent visibility. Daytime of Tuesday 16 september : The weather will become more uncertain during the day.
Good clear periods alternating with cloudy spells, sometimes dense. The risk of seeing rain will remain low. In the evening, changeable skies with risk of storms.
Possibility of showers NE force 1 turning SSE force 2 in the middle of the day then S. Gusts reaching 9 knots from the middle of the day. Smooth to slight sea. Low, fairly long swell from ESE. Excellent visibility.