A southwesterly, strong and very variable flow prevails over the whole area.
For Penthièvre :
No gale warning.
We are 85% sure of the situation, because the high pressure system could move in more quickly than forecast.
Low cloud developing into fog. Chance of light rain. In the evening, low cloud developing into fog.
No precipitation. WSW force 4 in the middle of the day becoming SW force 3 in the evening. Gusts reaching 19 knots in the middle of the day. Slight sea. Low, long swell from WSW. Visibility reduced by mist becoming reduced by fog in the evening.