Cassie Rock Weather Forecast
- 15
- 25
Sunny
- 18
- 29
Sunny
- 21
- 34
Sunny
- 23
- 36
Partly cloudy
- 21
- 24
Shower or two
- 18
- 25
Cloudy
- 20
- 29
Sunny
Today 3 Dec Sydney
Sunny. Winds southwesterly 15 to 20 km/h becoming light before dawn then becoming north to northeasterly 15 to 25 km/h in the middle of the day.
Sydney Coastal Waters
Broken Bay to Port Hacking- Wind
- South to southwesterly 10 to 15 knots becoming variable about 10 knots in the morning then becoming northeasterly 15 to 20 knots in the middle of the day.
- Seas
- Below 1 metre, increasing to 1 to 1.5 metres during the afternoon.
- 1st Swell
- Southerly 2 metres, decreasing to 1.5 metres during the morning, then decreasing to around 1 metre during the afternoon.
- Weather
- Mostly sunny.
- Weather Situation
- Winds should gradually ease and turn northerly as a high pressure system drifts across the state, entering the Tasman Sea midweek. Then, another trough is forecast to enter the state's far west on Friday ahead of a cold front crossing the state during the weekend, bringing a southerly wind change over coastal waters in its wake.
Cassie Rock Temperature Statistics View More
December Temperature
Terrey Hills (10km)
Lowest 2 December, 2025
11.5 °CAverage December
16.4 °CHighest 1 December, 2025
22.8 °C
Climate (2020–Present)
Terrey Hills (10km)
Average Low 2020–2025
13.4 °CAverage 2020–2025
16.9 °CAverage High 2020–2025
21.8 °C