A northerly, moderate and very variable flow prevails over the North-East of the basin. Over the South and the West, it is westerly, very strong and variable.
For Portonovo :
No gale warning.
The reliability of the situation is assessed at 90%.
Light cloudy spells. In the evening, good clear periods but cloud building.
No precipitation. SW force 2 in the middle of the day turning S force 3 in the evening. Gusts reaching 11 knots in the evening. Smooth sea. Low, short swell from NNE. Excellent visibility.