Duncan Weather Forecast

    • 13
    • 43

    Sunny

    • 24
    • 35

    Sunny

    • 16
    • 24

    Partly cloudy

    • 15
    • 26

    Partly cloudy

    • 17
    • 30

    Mostly sunny

    • 15
    • 21

    Cloudy

    • 13
    • 20

    Cloudy

Today 26 Jan Kangaroo Island

Sunny. The chance of fog in the south in the early morning. Winds south to southeasterly 15 to 20 km/h becoming light in the early morning then becoming northeast to southeasterly 15 to 25 km/h in the morning. Overnight temperatures falling to around 14 with daytime temperatures reaching 36 to 43.

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Duncan Temperature Statistics View More

January Temperature

Kingscote Airport (35km)

  • Lowest 23 January, 2026

    7.3 °C

  • Average January

    19.5 °C

  • Highest 7 January, 2026

    41.5 °C

Climate (2021–Present)

Kingscote Airport (35km)

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  • Average Low 2021–2026

    9.2 °C

  • Average 2021–2026

    14.7 °C

  • Average High 2021–2026

    21.1 °C
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