A westerly, moderate and mostly variable flow prevails over the whole area.
For Helensburgh :
No gale warning.
The reliability of the situation is very good.
Skies changeable to very cloudy. Showers all day. In the evening, good clear periods but cloud building.
No precipitation. W force 4 in the morning becoming WSW force 3 in the evening. Gusts reaching 22 knots in the middle of the day. Rippled sea becoming smooth in the middle of the day. Low, short swell from SSW. Excellent visibility.