Portland Bay Marina Weather Forecast

    • 9
    • 18

    Partly cloudy

    • 13
    • 22

    Shower or two

    • 11
    • 16

    Possible shower

    • 8
    • 16

    Showers increasing

    • 11
    • 18

    Showers. Becoming windy

    • 9
    • 14

    Cloudy

    • 7
    • 15

    Possible shower

Today 18 Oct South West

Partly cloudy. Light winds becoming northerly 15 to 20 km/h in the late evening. Daytime maximum temperatures around 20.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Variable about 10 knots becoming north to northeasterly 10 to 15 knots in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 2.5 to 3 metres inshore, increasing to 3 to 4 metres offshore.
Weather
Mostly sunny.
Weather Situation
A high pressure system over Victoria will move east to be over the Tasman Sea tonight allowing a trough will follow over the state Sunday and early Monday. A ridge of high pressure is expected to pass quickly over the state early Tuesday ahead of a strong low pressure system developing in the west, which is forecast to move across Victoria on Wednesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Bay Marina Temperature Statistics View More

October Temperature

Cape Nelson Lighthouse (11km)

  • Lowest 2 October, 2025

    8.2 °C

  • Average October

    13.4 °C

  • Highest 16 October, 2025

    26 °C

Climate (2020–Present)

Cape Nelson Lighthouse (11km)

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  • Average Low 2020–2025

    11.8 °C

  • Average 2020–2025

    14.3 °C

  • Average High 2020–2025

    17.6 °C
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