A northerly, moderate and mostly variable flow prevails over the North and the East of the basin. Over the South-West, it is easterly, moderate and mostly variable.
For Portonovo :
No gale warning.
The reliability of the situation is assessed at 95%.
Warm sun all day. In the evening, clear skies.
W force 2 turning N in the middle of the day then WSW force 1. Rippled sea. Low, short swell from NNW. Excellent visibility becoming good in the evening.