Portsea Surf Beach Weather Forecast

    • 16
    • 22

    Windy

    • 12
    • 17

    Partly cloudy

    • 13
    • 19

    Partly cloudy

    • 14
    • 23

    Partly cloudy

    • 16
    • 24

    Partly cloudy

    • 15
    • 19

    Cloudy

    • 14
    • 19

    Partly cloudy

Today 30 Dec Mornington Peninsula

Cloudy. Winds westerly 20 to 30 km/h turning south to southwesterly 30 to 45 km/h in the afternoon.

Port Phillip Local Waters

Wind
West to southwesterly below 10 knots tending south to southwesterly 15 to 25 knots in the middle of the day. Winds reaching up to 30 knots in the early afternoon. Squalls possible with south to southwesterly change.
Seas
Below 0.5 metres, increasing to 1 to 1.5 metres around midday.
Weather
Cloudy.
Weather Situation
A trough will cross the coast during Tuesday. A new ridge of high pressure will develop across the south on Wednesday, persisting across the coast into Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portsea Surf Beach Temperature Statistics View More

December Temperature

Avalon Airport (39km)

  • Lowest 7 December, 2025

    6.6 °C

  • Average December

    16.7 °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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