A westerly, strong and very variable flow prevails over the whole area.
For Dinorwic Marina :
No gale warning.
The reliability of the situation is very good.
Cloud and long sunny periods. Possibility of showers In the evening, cloudy spells, sometimes dense.
Possibility of showers SW force 5 in the middle of the day becoming SSW force 4 in the evening. Gusts reaching 38 knots in the middle of the day. Slight sea. Low, fairly long swell from WSW. Excellent visibility becoming good in the evening.