A northeasterly and very variable flow prevails over the South of the basin. Over the North, it is southwesterly, strong and very variable.
For Couëron :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Clear skies becoming somewhat cloudy. In the evening, relatively clear skies becoming changeable.
NNW force 2 in the middle of the day turning WNW in the evening. Gusts reaching 9 knots in the evening. Smooth sea. Low, fairly long swell from W. Excellent visibility becoming good in the evening.