A northeasterly and very variable flow prevails over the South and the East of the basin. Over the North-West, it is southwesterly, moderate and very variable.
For Saint-Cast :
No gale warning.
The reliability of the situation is very good.
Sunny spells with possibility of mist forming in the morning, sun and storm clouds in the afternoon. No precipitation in the morning, light showers in the afternoon. In the evening, very cloudy with risk of storms.
Light showers. NE force 2 freshening force 4 in the middle of the day then E force 3. Gusts reaching 24 knots in the evening. Smooth to slight sea. Low, short swell from NNE. Visibility reduced by mist becoming excellent in the middle of the day.