For Penthièvre :
No gale warning.
For the night from Wednesday to Thursday NE wind force 3 continuing all night. Gusts reaching 16 knots in the middle of the night.
Slight sea. Low, fairly long swell from W. Excellent visibility. Daytime of Thursday 24 september : The sky will remain changeable.
Good clear periods alternating with cloudy spells, sometimes more dense in the afternoon. The risk of seeing rain will remain low. In the evening, cloud and long sunny periods.
Possibility of showers NE force 3 in the morning temporarily force 2 in the middle of the day. Gusts reaching 15 knots in the morning. Slight sea. Low, fairly long swell from W. Excellent visibility becoming excellent in the middle of the day.