A southwesterly, very strong and variable flow prevails over the whole area.
For Saint Sampson Harbour :
No gale warning.
The reliability of the situation is assessed at 90%.
Sunny, changeable at times in the afternoon. No precipitation. In the evening, cloudy spells, sometimes dense.
No precipitation. SSW force 2 in the morning becoming force 3 in the evening. Gusts reaching 12 knots in the evening. Moderate sea becoming slight in the evening. Moderate, long swell from WNW then low in the evening. Excellent visibility.