High 1027 hPa centered at 150 nautical miles in the West-South-West of the Île de Sein moving at 16 knots to the North-East and gaining strength to 1033 hPa to be centered on Wales.
For Saint-Briac-sur-Mer :
No gale warning.
We are 75% sure of the situation, because the high pressure system could move in more quickly than forecast.
Very cloudy skies becoming totally overcast. Chance of light rain. In the evening, lots of good clear periods.
No precipitation. NW force 3 in the middle of the day becoming NNW force 2 in the evening. Gusts reaching 15 knots in the middle of the day. Smooth to slight sea. Low, short swell from NW. Excellent visibility becoming poor in the evening.