A northerly, weak and variable flow prevails over the South-West of the basin. Over the North and the East, it is westerly, moderate and very variable.
For Plage de Portrieux :
No gale warning.
We are 70% sure of the situation, because the high pressure system could move in more quickly than forecast.
Clear periods developing. Chance of light rain. In the evening, cloudy spells, sometimes dense.
Chance of light rain. NNE force 3 in the middle of the day turning NNW in the evening. Gusts reaching 17 knots in the evening. Smooth sea. Low, short swell from NNW. Excellent visibility becoming good in the evening.