A northeasterly, strong and mostly variable flow prevails over the South of the basin. Over the North, it is westerly, moderate and mostly variable.
For Grande plage de Sion :
No gale warning.
The reliability of the situation is assessed at 95%.
Sunny becoming changeable in the afternoon. No precipitation. In the evening, clear skies.
NW force 3 in the morning becoming WNW force 4 in the middle of the day. Gusts reaching 19 knots in the evening. Smooth to slight sea. Low, short swell from WSW. Excellent visibility.