Mona Vale Beach Weather Forecast
- 16
- 21
Partly cloudy
- 16
- 24
Sunny
- 18
- 24
Partly cloudy
- 19
- 21
Possible shower
- 19
- 22
Cloudy
- 19
- 25
Partly cloudy
- 20
- 27
Shower or two
Today 29 Dec Sydney
Mostly sunny. Light winds becoming southeasterly 15 to 25 km/h in the middle of the day then becoming light in the evening.
Sydney Coastal Waters
Broken Bay to Port Hacking- Wind
- Southerly 10 to 15 knots turning southeasterly in the afternoon.
- Seas
- Below 1 metre.
- 1st Swell
- Southerly 1.5 to 2 metres, tending southeasterly 1.5 to 2 metres around midday.
- Weather
- Partly cloudy.
- Weather Situation
- A fresh to strong southerly surge is moving north along the coast today following the earlier passage of a cold front over the Tasman Sea. A high pressure ridge along the coast will maintain south to southeast winds along much of the northern coast for the first half of this week, whist winds tend east to northeast along much of the southern coast ahead of another front that crosses Tasmania and moves over the Tasman Sea. Another fresh to possibly strong southerly surge moves north along the coast on Wednesday following the second front.
Mona Vale Beach Temperature Statistics View More
December Temperature
Terrey Hills (8km)
Lowest 3 December, 2025
11.3 °CAverage December
21.1 °CHighest 19 December, 2025
40.2 °C
Climate (2020–Present)
Terrey Hills (8km)
Average Low 2020–2025
13.4 °CAverage 2020–2025
16.9 °CAverage High 2020–2025
21.8 °C