Portland Offshore Weather Forecast

    • 6
    • 15

    Cloud clearing

    • 5
    • 20

    Mostly sunny

    • 11
    • 19

    Shower or two

    • 11
    • 16

    Showers increasing

    • 9
    • 13

    Shower or two

    • 8
    • 14

    Cloudy

    • 7
    • 16

    Partly cloudy

Today 11 Sep South West

Patchy morning fog. The chance of morning frost in the north. Sunny afternoon. Light winds. Overnight temperatures falling to around 3 with daytime temperatures reaching between 16 and 19.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Variable about 10 knots becoming easterly 10 to 15 knots in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 4 metres.
Weather
Partly cloudy.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Offshore Temperature Statistics View More

September Temperature

Cape Nelson Lighthouse (9km)

  • Lowest 8 September, 2026

    3.5 °C

  • Average September

    12.3 °C

  • Highest 1 September, 2026

    19.3 °C

Climate (2021–2026)

Cape Nelson Lighthouse (9km)

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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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