Portland Offshore Weather Forecast

    • 8
    • 15

    Partly cloudy

    • 6
    • 15

    Partly cloudy

    • 8
    • 15

    Cloudy

    • 7
    • 17

    Cloud clearing

    • 9
    • 19

    Showers

    • 9
    • 15

    Shower or two

    • 9
    • 16

    Showers

Today 28 Aug South West

Partly cloudy. Medium chance of showers in the south in the late morning and afternoon. Near zero chance of rain elsewhere. Winds westerly 15 to 20 km/h tending southwesterly in the middle of the day then becoming light in the late afternoon. Daytime maximum temperatures between 15 and 18.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
South to southwesterly 10 to 15 knots decreasing to about 10 knots in the early afternoon.
Seas
Around 1 metre, decreasing below 0.5 metres by early evening.
1st Swell
Southwesterly 3 metres.
Weather
Partly cloudy.
Weather Situation
A high pressure centre will persist across the State, weakening slightly during Friday as the tail end of a cold front clips southern parts of the State. A new ridge builds eastwards across the State from Saturday and moves slowly eastwards on Sunday and Monday.
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, 2026

    5.6 °C

  • Average August

    11.9 °C

  • Highest 19 August, 2026

    17.9 °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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