For De Saint-Nazaire à Nantes :
No gale warning.
The reliability of the situation is assessed at 80%.
Changeable skies becoming fairly cloud-free in the morning, sunny despite some high cloud in the afternoon. No precipitation. In the evening, clear skies.
NE force 2 in the morning becoming force 3 in the middle of the day. Gusts reaching 17 knots from the middle of the day. Smooth sea. Low, fairly long swell from W. Visibility reduced by mist becoming excellent in the middle of the day.