Portland Harbour Weather Forecast

    • 12
    • 18

    Partly cloudy

    • 9
    • 24

    Mostly sunny

    • 16
    • 22

    Possible shower

    • 11
    • 22

    Partly cloudy

    • 13
    • 26

    Partly cloudy

    • 15
    • 24

    Shower or two

    • 13
    • 19

    Cloudy

Today 20 Apr South West

Partly cloudy. The chance of smoke haze in the north later this evening. Light winds.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Variable about 10 knots.
Seas
Below 1 metre.
1st Swell
Southwesterly 1.5 to 2 metres.
Weather
Partly cloudy.
Weather Situation
A ridge of high pressure will continue to persist over Victoria in the coming days. A weak trough is expected to cross the southwest and pass through Bass Strait on Wednesday, briefly interrupting the ridge before a new high pressure system develops to the southwest. This high will pass through Bass Straight and move into the Tasman but will continue to extend a ridge over Victoria into Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Harbour Temperature Statistics View More

April Temperature

Cape Nelson Lighthouse (11km)

  • Lowest 19 April, 2026

    9.2 °C

  • Average April

    14.6 °C

  • Highest 9 April, 2026

    21.4 °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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