A northeasterly, very strong and very variable flow prevails over the South of the basin. Over the North, it is northwesterly, moderate and variable.
For Dinorwic Marina :
No gale warning.
The reliability of the situation is very good.
Fair weather with mostly clear skies. In the evening, fair weather with mostly clear skies.
SSW force 3 turning NNE force 4 in the middle of the day then N force 3. Gusts reaching 23 knots in the middle of the day. Smooth sea. Low, short swell from NW. Excellent visibility becoming excellent in the evening.