A northerly, strong and mostly variable flow prevails over the North of the basin. Over the South, it is easterly, strong and mostly variable.
For Penthièvre :
No gale warning.
The reliability of the situation is assessed at 90%.
Skies progressively hazing over in the morning, sunny becoming changeable in the afternoon. No precipitation. In the evening, good clear periods but cloud building.
No precipitation. NE force 2 in the morning turning WNW in the evening. Gusts reaching 10 knots in the morning. Slight sea becoming smooth to slight in the middle of the day. Low, fairly long swell from WSW. Poor visibility becoming excellent in the middle of the day.