A northerly and mostly variable flow prevails over the South and the East of the basin. Over the North-West, it is southwesterly, moderate and mostly variable.
For Plage de Portrieux :
No gale warning.
The reliability of the situation is assessed at 90%.
Clear periods developing. No precipitation. In the evening, light cloudy spells.
N wind force 4 from the middle of the day. Gusts reaching 19 knots in the middle of the day. Smooth to slight sea. Low, fairly long swell from SSW. Poor visibility becoming excellent in the evening.