Cassie Rock Weather Forecast

    • 11
    • 19

    Partly cloudy

    • 11
    • 18

    Sunny

    • 10
    • 18

    Sunny

    • 13
    • 17

    Shower or two

    • 13
    • 17

    Showers

    • 13
    • 18

    Showers

    • 12
    • 17

    Showers

Today 12 Aug Sydney

Partly cloudy. Slight chance of a shower, most likely in the late morning and afternoon. Light winds becoming northwesterly 15 to 20 km/h in the morning then tending westerly in the middle of the day.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
Northwesterly 15 to 20 knots turning westerly in the morning. Winds reaching up to 25 knots offshore in the evening.
Seas
Around 1 metre, increasing to 1 to 2 metres during the morning.
1st Swell
Southerly 1.5 to 2 metres, decreasing to 1.5 metres during the morning, then decreasing to around 1 metre during the afternoon.
Weather
Partly cloudy. 50% chance of showers. The chance of a thunderstorm late this afternoon and evening.
Weather Situation
A cold front and its associated trough are forecast to cross the coastal waters late Wednesday into early Thursday, with fresh westerly winds turning southwesterly in their wake. Then, a high pressure system moving over South Australia is expected to drift towards Tasmania later in the week through the weekend, directing onshore south to southeasterly winds over the coastal waters.
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  • Temperature Forecast Bureau of Meteorology

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Cassie Rock Temperature Statistics View More

August Temperature

Terrey Hills (10km)

  • Lowest 5 August, 2026

    4.6 °C

  • Average August

    11.8 °C

  • Highest 3 August, 2026

    20.5 °C

Climate (2021–2026)

Terrey Hills (10km)

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  • Average Low 2021–2026

    13.5 °C

  • Average 2021–2026

    17.1 °C

  • Average High 2021–2026

    21.9 °C
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