Duncan Weather Forecast

    • 6
    • 15

    Partly cloudy

    • 7
    • 20

    Mostly sunny

    • 7
    • 16

    Showers. Becoming windy

    • 7
    • 14

    Possible shower

    • 9
    • 16

    Partly cloudy

    • 7
    • 15

    Cloudy

    • 7
    • 17

    Cloudy

Today 17 Sep Kangaroo Island

Partly cloudy. Slight chance of a shower. Winds westerly 15 to 20 km/h turning north to northwesterly 15 to 25 km/h in the early afternoon. Daytime maximum temperatures around 16.

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Duncan Temperature Statistics View More

September Temperature

Kingscote Airport (35km)

  • Lowest 9 September, 2025

    2.1 °C

  • Average September

    12.7 °C

  • Highest 15 September, 2025

    22.2 °C

Climate (2020–Present)

Kingscote Airport (35km)

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  • Average Low 2020–2025

    9.2 °C

  • Average 2020–2025

    14.7 °C

  • Average High 2020–2025

    21.1 °C
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