Cassie Rock Weather Forecast

    • 11
    • 16

    Windy. Partly cloudy

    • 11
    • 17

    Partly cloudy

    • 11
    • 22

    Sunny

    • 15
    • 26

    Sunny

    • 15
    • 27

    Sunny

    • 18
    • 23

    Possible shower

    • 15
    • 20

    Shower or two

Today 16 Sep Sydney

Mostly clear. Winds southerly 30 to 45 km/h decreasing to 15 to 25 km/h in the late evening.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
Southerly 25 to 30 knots.
Seas
3 metres.
1st Swell
Southerly 2.5 to 3 metres inshore, increasing to 3 to 4 metres offshore.
Weather
Cloudy. 70% chance of showers.
Caution
Large and powerful surf conditions for the rest of the day are expected, particularly for south facing beaches. These conditions are expected to be hazardous for coastal activities such as crossing bars by boat and rock fishing.
Weather Situation
A strong high over the Great Australian Bight is moving east in the wake of a trough in the Tasman Sea, directing strong and blustery southerly winds over the coastal waters. The winds will ease from Thursday as the high moves across the state later in the week and into the weekend.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cassie Rock Temperature Statistics View More

September Temperature

Terrey Hills (10km)

  • Lowest 10 September, 2026

    8.1 °C

  • Average September

    16.5 °C

  • Highest 5 September, 2026

    30.8 °C

Climate (2021–2026)

Terrey Hills (10km)

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  • Average Low 2021–2026

    13.6 °C

  • Average 2021–2026

    17.1 °C

  • Average High 2021–2026

    22 °C
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