For Mouillage de Saint-Cast :
No gale warning.
For the night from Saturday to Sunday NNW force 3 in the early part of the night becoming N force 2. Gusts reaching 16 knots in the early part of the night.
Slight sea becoming smooth to slight in the middle of the night. Low, short swell from ESE then from NW in the middle of the night then from NW. Good visibility becoming poor in the middle of the night. Daytime of Sunday 16 august : The sky will remain changeable.
Skies changeable to very cloudy. Risk of showers in the morning, possibility of a few spots in the afternoon. In the evening, clear periods developing.
Showers towards the end of the night. NNE force 3 in the morning becoming N force 4 in the evening. Gusts reaching 17 knots in the evening. Slight sea. Low, short swell from NW. Poor visibility becoming excellent in the middle of the day.