Portland Harbour Weather Forecast

    • 9
    • 15

    Mostly clear

    • 6
    • 16

    Cloudy

    • 8
    • 15

    Shower or two

    • 6
    • 15

    Cloudy

    • 8
    • 15

    Cloudy

    • 6
    • 17

    Mostly sunny

    • 10
    • 18

    Showers

Today 26 Aug South West

Mostly clear. Light winds.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Variable below 10 knots.
Seas
Below 0.5 metres.
1st Swell
Southwesterly 2.5 metres.
Weather
Partly cloudy.
Weather Situation
A high pressure centre will persist across the State today and on Thursday. The high will weaken slightly on Friday as the tail end of a cold front clips southern parts of the State before a new ridge builds eastwards across the State from Saturday and into Sunday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Harbour Temperature Statistics View More

August Temperature

Cape Nelson Lighthouse (11km)

  • Lowest 1 August, 2026

    5.6 °C

  • Average August

    11.9 °C

  • Highest 19 August, 2026

    17.9 °C

Climate (2021–2026)

Cape Nelson Lighthouse (11km)

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  • Average Low 2021–2026

    11.9 °C

  • Average 2021–2026

    14.4 °C

  • Average High 2021–2026

    17.6 °C
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