For Mona Vale :
No gale warning.
The reliability of the situation is good.
Skies changeable to very cloudy. Light showers arriving in late morning, then dying out. In the evening, relatively clear skies becoming changeable.
Chance of light rain. SW force 4 in the morning turning S in the middle of the day. Gusts reaching 32 knots from the middle of the day. Rough sea becoming rough to very rough in the middle of the day. Low, fairly long swell from SE. Excellent visibility.