A northerly and mostly variable flow prevails over the South-East of the basin. Over the West and the North, it is southeasterly, strong and mostly variable.
For Portstewart :
Warning strong breeze offshore.
The reliability of the situation is very good.
Cloud and long sunny periods. No precipitation. In the evening, light cloudy spells.
SSE force 4 in the morning temporarily SE force 5 in the middle of the day. Gusts reaching 29 knots in the middle of the day. Smooth sea becoming smooth to slight in the middle of the day. Low, fairly long swell from NNW. Poor visibility becoming excellent in the middle of the day.