Derrinallum Weather Forecast

    • 9
    • 18

    Cloudy

    • 7
    • 25

    Cloudy

    • 8
    • 35

    Sunny

    • 14
    • 38

    Sunny

    • 16
    • 34

    Shower

    • 14
    • 27

    Partly cloudy

    • 12
    • 26

    Shower

Today 15 Dec South West

Cloudy. Medium chance of showers near the Otways, most likely in the morning and early afternoon. Near zero chance of rain elsewhere. Winds southwesterly 25 to 35 km/h turning southerly 20 to 30 km/h in the late afternoon. Overnight temperatures falling to around 8 with daytime temperatures reaching around 18.

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Derrinallum Temperature Statistics View More

December Temperature

Westmere (36km)

  • Lowest 12 December, 2025

    2.4 °C

  • Average December

    15.6 °C

  • Highest 4 December, 2025

    34.8 °C

Climate (2020–Present)

Westmere (36km)

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  • Average Low 2020–2025

    7.5 °C

  • Average 2020–2025

    13 °C

  • Average High 2020–2025

    19.6 °C
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