Portland Offshore Weather Forecast

    • 6
    • 14

    Cloudy

    • 5
    • 20

    Mostly sunny

    • 12
    • 21

    Sunny

    • 12
    • 22

    Shower or two. Windy

    • 8
    • 13

    Cloudy

    • 6
    • 15

    Partly cloudy

    • 6
    • 18

    Partly cloudy

Today 17 Sep South West

Cloudy. Winds west to southwesterly 15 to 20 km/h becoming light in the late afternoon. Daytime maximum temperatures around 15.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Westerly 10 to 15 knots, reaching up to 20 knots in the far east during the afternoon and evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres in the far east during the afternoon.
1st Swell
Southwesterly 3 to 4 metres, decreasing to 3 metres around midday.
Weather
Cloudy.
Weather Situation
A strong high pressure system south of the Bight drifts eastward, to be centred over western Victoria by tonight. Winds will tend warmer northwesterly on Friday and into Saturday as the high moves slowly over NSW before a cold front crosses the State on Sunday.
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

    12.8 °C

  • Highest 13 September, 2026

    23.7 °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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