A northerly, strong and mostly variable flow prevails over the North of the basin. Over the South, it is southwesterly, moderate and mostly variable.
Für Porsay :
No gale warning.
The reliability of the situation is good.
Bright spells increasing during the morning, sunny becoming changeable in the afternoon. No precipitation. In the evening, cloudy spells, sometimes dense.
 Chance of light rain. S force 3 turning NW force 4 in the middle of the day then SE force 3. Gusts reaching 22 knots in the middle of the day. Slight sea. Low, short swell from NW. Poor visibility becoming excellent in the middle of the day then good.