An easterly and very variable flow prevails over the South-East of the basin. Over the West and the North, it is southerly, very strong and very variable.
For Saint-Jean-de-Monts :
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.
ENE force 1 in the middle of the day turning WNW force 2 in the evening. Gusts reaching 8 knots in the evening. Slight sea. Low, long swell from WSW. Excellent visibility becoming excellent in the evening.