High 1021 hPa centered on Normandy moving at 10 knots to the South-West to be centered on Brittany.
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.
Good clear periods alternating with cloudy spells, sometimes dense. Some light showers in the morning, no precipitation in the afternoon. In the evening, relatively clear skies becoming changeable.
W force 3 in the morning turning NNW in the middle of the day. Gusts reaching 17 knots in the morning. Smooth to slight sea becoming smooth in the middle of the day. Low, fairly long swell from N. Poor visibility becoming excellent in the middle of the day then good.