A southerly, strong and very variable flow prevails over the whole area.
For Penthièvre :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Fair weather with mostly clear skies. In the evening, fair weather with mostly clear skies.
ENE force 3 in the morning becoming force 2 in the evening. Gusts reaching 13 knots until the middle of the day. Slight sea. Low, fairly long swell from WSW. Poor visibility becoming excellent in the middle of the day then good.