A westerly and mostly variable flow prevails over the whole area.
For Saint-Cast :
No gale warning.
We are 85% sure of the situation, because flows might be far more disturbed than forecast.
Very cloudy skies to overcast. The risk of seeing rain will remain low. In the evening, very cloudy.
Chance of light rain. WSW force 3 turning WNW in the middle of the day then becoming force 4. Gusts reaching 21 knots in the evening. Smooth to slight sea. Low, short swell from NNW. Poor visibility becoming excellent in the middle of the day.