A southwesterly and very variable flow prevails over the whole area.
For Penthièvre :
No gale warning.
The reliability of the situation is assessed at 85%.
Good clear periods alternating with cloudy spells, rather dense in the morning. Risk of some spots of rain in the morning, no precipitation in the afternoon. In the evening, skies with few clouds.
NE force 2 in the morning turning W force 3 in the middle of the day. Gusts reaching 14 knots in the evening. Slight sea. Low, fairly long swell from W. Poor visibility becoming excellent in the middle of the day then good.