An easterly and variable flow prevails over the East of the basin. Over the West, it is southerly, moderate and very variable.
For Pornichet :
No gale warning.
The reliability of the situation is assessed at 80%.
Fair weather with mostly clear skies. In the evening, relatively clear skies becoming changeable.
NE force 3 turning E in the middle of the day then W. Gusts reaching 17 knots in the morning. Smooth sea. Low, short swell from WSW. Excellent visibility.