Garden Island Weather Forecast

    • 11
    • 22

    Showers developing

    • 11
    • 19

    Possible shower

    • 8
    • 18

    Cloudy

    • 8
    • 18

    Partly cloudy

    • 8
    • 22

    Mostly sunny

    • 8
    • 23

    Sunny

    • 10
    • 26

    Mostly sunny

Today 7 Sep Illawarra

Partly cloudy. The chance of fog inland early this morning. High chance of showers in the south, medium chance elsewhere. Winds west to northwesterly 15 to 25 km/h turning south to southwesterly in the early afternoon. Daytime maximum temperatures between 17 and 23.

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Garden Island Temperature Statistics View More

September Temperature

Nowra (RAN Air Station) (18km)

  • Lowest 1 September, 2026

    8.1 °C

  • Average September

    17.8 °C

  • Highest 5 September, 2026

    30.4 °C

Climate (2021–2026)

Nowra (RAN Air Station) (18km)

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  • Average Low 2021–2026

    12.1 °C

  • Average 2021–2026

    16.6 °C

  • Average High 2021–2026

    22.6 °C
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