A northerly and very variable flow prevails over the South-East of the basin. Over the South-West, it is easterly, moderate and variable. Over the North, it is southwesterly, weak and very variable.
For Portonovo :
No gale warning.
The reliability of the situation is assessed at 90%.
Warm sun all day. In the evening, clear skies.
NE force 1 becoming ENE force 2 in the middle of the day then SSE. Gusts reaching 9 knots in the evening. Rippled sea. Low, short swell from N. Excellent visibility.