Portland Harbour Weather Forecast

    • 14
    • 28

    Mostly clear

    • 15
    • 21

    Morning showers

    • 10
    • 20

    Possible shower

    • 12
    • 17

    Cloudy

    • 10
    • 17

    Cloudy

    • 8
    • 22

    Mostly sunny

    • 13
    • 21

    Shower or two

Today 31 Mar South West

Clear. Winds northerly 25 to 35 km/h decreasing to 15 to 25 km/h in the evening.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
North to northeasterly 10 to 15 knots, reaching up to 20 knots in the far east in the late evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 metres.
Weather
Mostly clear.
Weather Situation
A high pressure system in the Tasman Sea will continue to extend a ridge over Victoria until a weak trough crosses the state on Wednesday. A new weak ridge of high pressure will begin to develop from the west on Thursday before a weak cold front skims the south late Thursday evening, into early Friday morning. A following high pressure system will then drift southwards over Tasmania on the weekend, extending a ridge over Victoria.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Harbour Temperature Statistics View More

March Temperature

Cape Nelson Lighthouse (11km)

  • Lowest 27 March, 2026

    9.7 °C

  • Average March

    16.6 °C

  • Highest 24 March, 2026

    25.9 °C

Climate (2021–Present)

Cape Nelson Lighthouse (11km)

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  • Average Low 2021–2026

    11.8 °C

  • Average 2021–2026

    14.3 °C

  • Average High 2021–2026

    17.6 °C
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