Garden Island Weather Forecast

    • 15
    • 24

    Possible storm

    • 15
    • 28

    Shower or two

    • 16
    • 34

    Possible shower

    • 15
    • 21

    Cloudy

    • 14
    • 22

    Cloudy

    • 14
    • 26

    Partly cloudy

    • 14
    • 30

    Sunny

Today 12 Dec Illawarra

Partly cloudy. Slight chance of a shower, becoming less likely later this evening. The chance of a thunderstorm early this evening, possibly severe with heavy rain which may lead to flash flooding. Winds east to northeasterly 15 to 25 km/h becoming light in the late evening.

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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Garden Island Temperature Statistics View More

December Temperature

Nowra (RAN Air Station) (18km)

  • Lowest 1 December, 2025

    8.8 °C

  • Average December

    21 °C

  • Highest 6 December, 2025

    39.5 °C

Climate (2020–Present)

Nowra (RAN Air Station) (18km)

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  • Average Low 2020–2025

    12 °C

  • Average 2020–2025

    16.5 °C

  • Average High 2020–2025

    22.4 °C
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