Portsea Weather Forecast

    • 13
    • 19

    Partly cloudy

    • 13
    • 19

    Windy

    • 12
    • 17

    Windy

    • 12
    • 17

    Cloudy

    • 12
    • 20

    Sunny

    • 14
    • 25

    Sunny

    • 15
    • 27

    Partly cloudy

Today 23 Dec Mornington Peninsula

Partly cloudy. Slight chance of a shower in the early afternoon. Winds southwesterly 25 to 35 km/h tending westerly 20 to 30 km/h in the late evening.

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Portsea Temperature Statistics View More

December Temperature

Avalon Airport (39km)

  • Lowest 7 December, 2025

    6.6 °C

  • Average December

    16.9 °C

  • Highest 18 December, 2025

    39.5 °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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