A northwesterly, very strong and very variable flow prevails over the whole area.
For Penthièvre :
Warning moderate gale offshore.
The reliability of the situation is assessed at 80%.
Skies very cloudy, becoming totally overcast during the morning, overcast, gloomy skies with wet-weather low cloud in the afternoon. Showers all day. In the evening, overcast skies.
Light rain gradually becoming less frequent. W force 4 in the morning freshening SW force 6 in the middle of the day. Gusts reaching 45 knots in the evening. Moderate sea becoming rough in the middle of the day then rough to very rough. Moderate, fairly long swell from WSW then low from WNW in the middle of the day then, short swell from NW. Excellent visibility.