A southeasterly, moderate and mostly variable flow prevails over the whole area.
For Piriac-sur-Mer :
No gale warning.
The reliability of the situation is assessed at 95%.
Fair weather with mostly clear skies. In the evening, relatively cloudless skies clearing.
E force 4 in the middle of the day becoming ENE force 3 in the evening. Gusts reaching 18 knots in the middle of the day. Smooth to slight sea. Low, fairly long swell from WSW. Excellent visibility.