Cassie Rock Weather Forecast

    • 15
    • 21

    Shower or two

    • 14
    • 18

    Possible morning shower

    • 12
    • 18

    Possible shower

    • 12
    • 17

    Partly cloudy

    • 12
    • 20

    Partly cloudy

    • 13
    • 21

    Sunny

    • 13
    • 24

    Mostly sunny

Today 7 Sep Sydney

Mostly sunny morning. Medium chance of showers, most likely in the late afternoon and evening. Light winds becoming southerly 20 to 30 km/h in the early afternoon.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
Southerly 10 to 15 knots becoming variable about 10 knots in the morning then becoming southerly 15 to 25 knots in the evening. Winds reaching up to 30 knots in the late evening. Squalls possible with the wind change.
Seas
Around 1 metre, decreasing below 0.5 metres during the morning, then increasing to around 1 metre by early evening.
1st Swell
Southerly 1.5 to 2.5 metres, decreasing to 1.5 metres by early evening.
Weather
Mostly sunny. 70% chance of showers. The chance of a thunderstorm in the late afternoon and evening.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cassie Rock Temperature Statistics View More

September Temperature

Terrey Hills (10km)

  • Lowest 1 September, 2026

    11.3 °C

  • Average September

    18.7 °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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