Portsea Weather Forecast

    • 13
    • 23

    Shower

    • 14
    • 18

    Partly cloudy

    • 13
    • 18

    Partly cloudy

    • 12
    • 18

    Partly cloudy

    • 13
    • 24

    Partly cloudy

    • 15
    • 22

    Shower

    • 12
    • 19

    Shower

Today 8 Dec Mornington Peninsula

Partly cloudy. Medium chance of showers, most likely later tonight. Winds west to southwesterly 15 to 20 km/h tending south to southwesterly in the evening then becoming light in the late evening.

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  • Temperature Forecast Bureau of Meteorology

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Portsea Temperature Statistics View More

December Temperature

Avalon Airport (39km)

  • Lowest 7 December, 2025

    6.6 °C

  • Average December

    15.9 °C

  • Highest 4 December, 2025

    34.8 °C

Climate (2020–Present)

Avalon Airport (39km)

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  • Average Low 2020–2025

    9.6 °C

  • Average 2020–2025

    14.5 °C

  • Average High 2020–2025

    20.4 °C
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