Cassie Rock Weather Forecast

    • 12
    • 18

    Partly cloudy

    • 12
    • 17

    Cloudy

    • 13
    • 18

    Partly cloudy

    • 12
    • 20

    Partly cloudy

    • 14
    • 22

    Sunny

    • 15
    • 23

    Sunny

    • 16
    • 26

    Shower or two

Today 9 Sep Sydney

Partly cloudy. Slight chance of a shower. Winds southwesterly 15 to 20 km/h tending southerly 30 to 45 km/h in the middle of the day.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
West to southwesterly 15 to 20 knots turning southerly 25 to 30 knots in the middle of the day.
Seas
Below 1 metre, increasing to 1 to 1.5 metres around midday, then increasing to 2.5 to 3 metres during the afternoon.
1st Swell
Southerly 1 to 2 metres, increasing to 2.5 to 3 metres later in the evening.
Weather
Partly cloudy. 50% chance of showers.
Weather Situation
A broad high pressure ridge extends across the state while a cold front crossing the eastern areas on Wednesday, with showers and fresh to strong southerly winds along the coast in its wake. Winds will gradually ease later in the week, then turn east to northeasterly as a high pressure system traverses the state's south and enters the Tasman Sea by the weekend.
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  • Temperature Forecast Bureau of Meteorology

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Cassie Rock Temperature Statistics View More

September Temperature

Terrey Hills (10km)

  • Lowest 8 September, 2026

    9.7 °C
  • Average September

    17.5 °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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