A westerly and mostly variable flow prevails over the South and the East of the basin. Over the North-West, it is southwesterly, moderate and mostly variable.
For Portstewart :
No gale warning.
The reliability of the situation is very good.
Predominantly sunny in the morning, very cloudy in the afternoon. No precipitation. In the evening, very cloudy.
No precipitation. WNW force 3 in the morning temporarily NW force 4 in the middle of the day. Gusts reaching 22 knots in the middle of the day. Smooth to slight sea. Low, short swell from NW. Good visibility becoming excellent in the middle of the day then poor.