A westerly, strong and very variable flow prevails over the whole area.
For Rochevilaine :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Some fair-weather cumulus clouds. In the evening, skies with few clouds covering over progressively.
No precipitation. WNW wind force 4 from the middle of the day. Gusts reaching 21 knots in the middle of the day. Smooth to slight sea. Low, short swell from SW. Excellent visibility becoming excellent in the evening.