A northerly, moderate and mostly variable flow prevails over the South and the West of the basin. Over the North-East, it is southerly, weak and mostly variable.
For Porsay :
No gale warning.
The reliability of the situation is very good.
Clear skies. In the evening, clear skies.
NE force 3 in the middle of the day becoming force 2 in the evening. Gusts reaching 15 knots in the middle of the day. Smooth sea. Low, short swell from NE. Excellent visibility becoming good in the evening.