A southwesterly, strong and very variable flow prevails over the West of the basin. Over the East, it is northwesterly, moderate and very variable.
For Jullouville :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Clear skies. In the evening, skies with few clouds covering over progressively.
No precipitation. NW wind force 4 from the middle of the day. Gusts reaching 20 knots in the middle of the day. Smooth to slight sea. Low, short swell from W. Excellent visibility.