Cowan Creek - Castle Bay Weather Forecast

    • 15
    • 26

    Mostly clear

    • 17
    • 26

    Sunny

    • 12
    • 21

    Sunny

    • 13
    • 28

    Windy. Mostly sunny

    • 13
    • 21

    Sunny

    • 11
    • 21

    Mostly sunny

    • 12
    • 18

    Partly cloudy

Today 2 Sep Sydney

Mostly clear. Winds west to northwesterly 15 to 25 km/h becoming light in the evening.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
West to northwesterly below 10 knots.
Seas
Below 0.5 metres.
Weather
Mostly clear.
Weather Situation
North to northwesterly winds will persist ahead of a trough and associated cold front crossing the Sydney Waters during Thursday, driving westerly winds in its wake. North to northwesterly winds are forecast to redevelop ahead of a series of fronts crossing the waters during the weekend.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cowan Creek - Castle Bay Temperature Statistics View More

September Temperature

Terrey Hills (9km)

  • Lowest 1 September, 2026

    11.3 °C

  • Average September

    15.4 °C

  • Highest

    –

Climate (2021–2026)

Terrey Hills (9km)

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  • Average Low 2021–2026

    13.6 °C

  • Average 2021–2026

    17.1 °C

  • Average High 2021–2026

    21.9 °C
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