For Mouillage de Saint-Cast :
No gale warning.
The reliability of the situation is assessed at 70%.
Very cloudy with risk of thunderstorms in the morning, some sun but cloud building in the afternoon. Rain followed by showers in the morning, light showers dying away progressively in the afternoon. In the evening, clear periods developing.
Chance of light rain. S force 5 in the morning turning WSW in the middle of the day. Gusts reaching 34 knots in the middle of the day. Smooth to slight sea becoming slight in the evening. Low, short swell from N. Poor visibility becoming excellent in the middle of the day.