A westerly, moderate and variable flow prevails over the whole area.
For Caernarfon Marina :
No gale warning.
The reliability of the situation is very good.
Skies very cloudy to overcast in the morning, cloud largely disappearing in the afternoon. No precipitation. In the evening, skies with few clouds.
NNW force 2 in the morning turning NNE force 3 in the middle of the day. Gusts reaching 19 knots in the middle of the day. Smooth sea. Low, short swell from NW. Poor visibility becoming good in the middle of the day then poor.