A westerly, moderate 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.
Some fair-weather cumulus clouds. In the evening, clear periods developing.
No precipitation. W force 3 in the middle of the day turning NW in the evening. Gusts reaching 18 knots in the evening. Slight sea. Low, short swell from W. Excellent visibility becoming excellent in the evening.