An easterly and very variable flow prevails over the North of the basin. Over the South-West, it is southerly, moderate and very variable. Over the South-East, it is northwesterly, weak and very variable.
For Pornichet :
No gale warning.
We are 70% sure of the situation, because the high pressure system could move in more quickly than forecast.
In the evening, light cloudy spells.
ENE wind force 2. Gusts reaching 9 knots in the evening. Smooth to slight sea. Low, short swell from WSW. Excellent visibility.