For Batz-sur-Mer :
No gale warning.
The reliability of the situation is assessed at 85%.
Good clear periods but with plenty of cloud in the morning, sunny in the afternoon. The risk of seeing rain will remain low. In the evening, relatively clear skies becoming changeable.
W wind force 4 continuing all day. Gusts reaching 21 knots from the middle of the day. Slight sea. Low, fairly long swell from WSW. Excellent visibility.