Garden Island Weather Forecast

    • 14
    • 27

    Shower or two

    • 17
    • 33

    Becoming windy. Partly cloudy

    • 15
    • 21

    Cloudy

    • 14
    • 22

    Cloudy

    • 13
    • 26

    Mostly sunny

    • 14
    • 30

    Sunny

    • 16
    • 33

    Partly cloudy

Today 13 Dec Illawarra

Partly cloudy. The chance of fog in the early morning. Medium chance of showers, most likely in the afternoon and evening. The chance of a thunderstorm in the afternoon and evening. Light winds becoming northwest to northeasterly 15 to 25 km/h in the middle of the day then tending west to northwesterly 15 to 20 km/h in the evening. Overnight temperatures falling to between 12 and 16 with daytime temperatures reaching around 30.

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  • Temperature Forecast Bureau of Meteorology

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Garden Island Temperature Statistics View More

December Temperature

Nowra (RAN Air Station) (18km)

  • Lowest 1 December, 2025

    8.8 °C
  • Average December

    20.6 °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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