Williamstown Marina Weather Forecast

    • 13
    • 20

    Cloudy

    • 11
    • 21

    Cloudy

    • 13
    • 20

    Partly cloudy

    • 12
    • 22

    Cloudy

    • 13
    • 18

    Shower or two

    • 12
    • 19

    Cloudy

    • 12
    • 24

    Mostly sunny

Today 21 Dec Melbourne

Cloudy. Medium chance of showers in the east, slight chance elsewhere. Winds southwesterly 15 to 25 km/h.

Port Phillip Local Waters

Wind
Southwesterly 15 to 25 knots.
Seas
1 to 1.5 metres.
Weather
Cloudy.
Weather Situation
A low pressure system lies over eastern Victoria and Bass Strait and is expected to deepen as it moves southeast into the Tasman Sea by late Sunday. A high pressure ridge then builds across Victoria and Bass Strait during Monday. A weak cold front crosses Bass Strait during late Monday and early Tuesday with the ridge re-establishing itself over Bass Strait from Tuesday to Thursday.
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  • Temperature Forecast Bureau of Meteorology

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Williamstown Marina Temperature Statistics View More

December Temperature

Laverton RAAF Base (13km)

  • Lowest 7 December, 2025

    6.6 °C

  • Average December

    17.9 °C

  • Highest 18 December, 2025

    39.3 °C

Climate (2020–Present)

Laverton RAAF Base (13km)

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  • Average Low 2020–2025

    10.5 °C

  • Average 2020–2025

    15 °C

  • Average High 2020–2025

    20.4 °C
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