Portland Offshore Weather Forecast

    • 4
    • 15

    Clear

    • 4
    • 18

    Sunny

    • 9
    • 22

    Possible shower

    • 12
    • 19

    Shower or two

    • 10
    • 15

    Showers easing

    • 10
    • 20

    Cloudy

    • 11
    • 24

    Partly cloudy

Today 22 Sep South West

Clear. Winds southeasterly 15 to 20 km/h becoming light in the late afternoon.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
East to southeasterly about 10 knots.
Seas
Below 1 metre.
1st Swell
Southwesterly 4 to 5 metres.
Weather
Clear.
Weather Situation
A high pressure system over the Bass Strait will move into the Tasman Sea during the week, directing a warm north to northeasterly airstream over Victoria during the second half of the week. Another high pressure system moves in from the west from Saturday.
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

    13.1 °C

  • Highest 20 September, 2026

    25.5 °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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