For Mouillage de Saint-Cast :
No gale warning.
For the night from Friday to Saturday N force 1 turning SSE in the middle of the night then S. Gusts reaching 10 knots in the early part of the night.
Slight sea. Low, long swell from NW. Excellent visibility becoming good in the middle of the night then good. Daytime of Saturday 26 september : The weather will become more uncertain during the day.
Cloud and long sunny periods. No precipitation in the morning, possibility of showers in the afternoon. In the evening, cloud and long sunny periods.
Possibility of showers SSW force 1 turning N force 2 in the middle of the day then becoming force 3. Gusts reaching 13 knots in the evening. Slight sea. Low, short swell from NW then from N in the middle of the day. Poor visibility becoming excellent in the middle of the day.