For Mouillage de Saint-Cast :
No gale warning.
For the night from Wednesday to Thursday N force 2 in the early part of the night becoming NNE force 1. Gusts reaching 11 knots in the early part of the night.
Smooth to slight sea. Low, fairly long swell from NW. Excellent visibility. Daytime of Thursday 20 august : The sky will remain changeable.
Good clear periods alternating with cloudy spells, rather dense in the morning. Risk of some spots of rain in the morning, no precipitation in the afternoon. In the evening, cloudy spells, sometimes dense.
Chance of light rain. NW force 1 freshening force 3 in the middle of the day then becoming NNW. Gusts reaching 15 knots in the evening. Smooth to slight sea becoming slight in the middle of the day. Low from N. Excellent visibility.