An easterly, very strong and very variable flow prevails over the whole area.
For Penthièvre :
No gale warning.
The reliability of the situation is assessed at 75%.
Very cloudy. Chance of light rain. In the evening, overcast and misty, reduced visibility.
Light showers. ESE force 4 in the middle of the day becoming force 3 in the evening. Gusts reaching 22 knots in the middle of the day. Slight sea. Low, fairly long swell from SW. Excellent visibility becoming reduced by mist in the evening.