Portland Offshore Weather Forecast

    • 8
    • 15

    Possible shower

    • 5
    • 16

    Partly cloudy

    • 7
    • 19

    Shower or two

    • 11
    • 17

    Showers

    • 7
    • 13

    Showers

    • 7
    • 12

    Showers

    • 5
    • 11

    Showers

Today 23 Aug South West

Partly cloudy. Patchy morning fog in the northeast. Slight chance of a shower in the morning. Light winds. Overnight temperatures falling to between 4 and 7 with daytime temperatures reaching around 15.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Northwest to southwesterly 15 to 20 knots becoming southwesterly 10 to 15 knots before dawn then becoming variable below 10 knots in the middle of the day.
Seas
1 to 1.5 metres, decreasing below 1 metre during the morning.
1st Swell
West to southwesterly 3 to 4 metres.
Weather
Partly cloudy.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Offshore Temperature Statistics View More

August Temperature

Cape Nelson Lighthouse (9km)

  • Lowest 1 August, 2025

    5.4 °C

  • Average August

    11.7 °C

  • Highest 21 August, 2025

    19.4 °C

Climate (2020–Present)

Cape Nelson Lighthouse (9km)

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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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