A northeasterly flow prevails over the South of the basin. Over the North, it is westerly, strong and mostly variable.
For Portonovo :
No gale warning.
The reliability of the situation is good.
In the evening, overcast skies but some breaks developing.
Light showers progressively becoming less frequent. WSW wind force 3. Gusts reaching 21 knots in the evening. Smooth to slight sea. Low, fairly long swell from W. Visibility reduced by mist.