Low 971 hPa centered at 230 nautical miles in the West-South-West of Fastnet Rock (South-West Ireland) moving at 9 knots to the East-North-East and rising to 981 hPa to be centered on the Celtic Sea.
For Plage de Mesperleuc :
Warning moderate gale offshore.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Skies changeable to very cloudy. Light showers progressively dying out in the morning, no precipitation in the afternoon. In the evening, good clear periods but lots of cloud, too.
Chance of light rain. WSW force 5 becoming force 4 in the middle of the day then SSW force 3. Gusts reaching 31 knots in the morning. Rough to very rough sea becoming rough in the middle of the day. Moderate, fairly long swell from SW. Excellent visibility becoming good in the evening.