High 1028 hPa centered on the Celtic Sea remaining almost stationary.
For Plage de Portrieux : No gale warning.
We are 75% sure of the situation, because the high pressure system could move in more quickly than forecast.
Relatively clear skies becoming changeable.In the evening, lots of good clear periods. No precipitation. NE wind force 3 from the middle of the day. Gusts reaching 13 knots in the middle of the day. Smooth sea. Low, short swell from NNE. Excellent visibility becoming poor in the evening.