Koallah Weather Forecast

    • 9
    • 17

    Shower

    • 8
    • 17

    Cloudy

    • 7
    • 23

    Partly cloudy

    • 9
    • 33

    Sunny

    • 14
    • 35

    Sunny

    • 14
    • 28

    Partly cloudy

    • 12
    • 27

    Shower

Today 14 Dec South West

Cloudy. Medium chance of showers near the Otways, slight chance elsewhere. Winds westerly 30 to 45 km/h turning southwesterly in the middle of the day then decreasing to 25 to 35 km/h in the evening. Overnight temperatures falling to around 10 with daytime temperatures reaching between 17 and 21.

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Koallah Temperature Statistics View More

December Temperature

Mortlake Racecourse (47km)

  • Lowest 11 December, 2025

    1.9 °C

  • Average December

    14.7 °C

  • Highest 4 December, 2025

    33.7 °C

Climate (2020–Present)

Mortlake Racecourse (47km)

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  • Average Low 2020–2025

    8 °C

  • Average 2020–2025

    13.3 °C

  • Average High 2020–2025

    19.6 °C
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