For Mouillage de Saint-Cast :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
For the night from Sunday to Monday NW force 2 turning W force 1 in the middle of the night then WSW. Gusts reaching 7 knots in the early part of the night.
Smooth sea becoming smooth to slight at the end of the night. Low, short swell from N then from NW at the end of the night. Poor visibility becoming reduced by mist in the middle of the night. Daytime of Monday 14 september : There will be a considerable improvement in the situation.
Skies very cloudy to overcast in the morning, changeable skies becoming relatively cloud-free in the afternoon. No precipitation. In the evening, clear skies.
SW force 1 freshening NNE force 3 in the middle of the day then becoming ENE. Gusts reaching 13 knots in the middle of the day. Smooth to slight sea temporarily smooth in the middle of the day. Low, short swell from NW. Visibility reduced by mist becoming excellent in the middle of the day then poor.