O B Flat Weather Forecast

    • 10
    • 18

    Rain

    • 9
    • 20

    Shower or two

    • 10
    • 19

    Cloudy

    • 11
    • 20

    Possible shower

    • 10
    • 19

    Cloudy

    • 9
    • 23

    Cloud clearing

    • 8
    • 30

    Sunny

Today 21 Dec Mount Gambier

Cloudy. Very high chance of rain, most likely in the morning and afternoon. Winds southeasterly 15 to 20 km/h turning southwesterly 25 to 35 km/h in the middle of the day then becoming light in the late evening.

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  • Temperature Forecast Bureau of Meteorology

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O B Flat Temperature Statistics View More

December Temperature

Mount Gambier Airport (14km)

  • Lowest 7 December, 2025

    4.7 °C

  • Average December

    16.2 °C

  • Highest 18 December, 2025

    38.9 °C

Climate (2020–Present)

Mount Gambier Airport (14km)

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  • Average Low 2020–2025

    8.8 °C

  • Average 2020–2025

    13.6 °C

  • Average High 2020–2025

    19.9 °C
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