Cassie Rock Weather Forecast

    • 22
    • 39

    Possible storm

    • 22
    • 28

    Partly cloudy

    • 21
    • 33

    Shower or two. Possible storm

    • 24
    • 29

    Shower or two

    • 20
    • 28

    Shower or two

    • 20
    • 27

    Possible shower

    • 20
    • 23

    Shower or two

Today 19 Dec Sydney

Partly cloudy. Slight chance of a shower. The chance of a thunderstorm in the afternoon and evening. Winds southeast to southwesterly 15 to 20 km/h.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
Variable about 10 knots.
Seas
Below 1 metre.
1st Swell
Northeasterly around 1 metre.
Weather
Partly cloudy. The chance of a thunderstorm inshore in the late afternoon and evening.
Weather Situation
A high in the Tasman Sea is directing northerly winds over Coastal Waters. A weak trough will bring a brief southerly change to much of the coast today, before winds turn northerly again over the weekend. Following this, a cold front will bring a fresh to strong southerly change later on Sunday or Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cassie Rock Temperature Statistics View More

December Temperature

Terrey Hills (10km)

  • Lowest 3 December, 2025

    11.3 °C

  • Average December

    20.8 °C

  • Highest 6 December, 2025

    39.9 °C

Climate (2020–Present)

Terrey Hills (10km)

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  • Average Low 2020–2025

    13.4 °C

  • Average 2020–2025

    16.9 °C

  • Average High 2020–2025

    21.8 °C
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