A southwesterly and very variable flow prevails over the whole area.
For Penthièvre :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Cloud and sun in the morning, sunny in the afternoon. No precipitation. In the evening, skies with few clouds.
W force 2 becoming WSW force 3 in the middle of the day then WNW. Gusts reaching 13 knots from the middle of the day. Slight sea. Low, fairly long swell from WSW. Visibility reduced by mist becoming excellent in the middle of the day then poor.