Portland Offshore Weather Forecast

    • 5
    • 17

    Mostly sunny

    • 8
    • 17

    Cloudy

    • 10
    • 18

    Shower or two

    • 9
    • 17

    Shower or two

    • 9
    • 17

    Shower or two

    • 10
    • 17

    Shower or two

    • 10
    • 17

    Shower or two

Today 22 May South West

The chance of morning frost in the northeast. Patchy morning fog. Mostly sunny afternoon. Light winds becoming north to northeasterly 15 to 20 km/h in the middle of the day then becoming light in the early afternoon. Overnight temperatures falling to around 4 with daytime temperatures reaching around 17.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Northeasterly about 10 knots increasing to 10 to 15 knots in the morning.
Seas
Below 0.5 metres, increasing to around 1 metre offshore.
1st Swell
Southwesterly 2 to 3 metres.
Weather
Partly cloudy.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Offshore Temperature Statistics View More

May Temperature

Cape Nelson Lighthouse (9km)

  • Lowest 7 May, 2026

    6.7 °C

  • Average May

    14.8 °C

  • Highest 1 May, 2026

    28.1 °C

Climate (2021–Present)

Cape Nelson Lighthouse (9km)

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  • Average Low 2021–2026

    11.8 °C

  • Average 2021–2026

    14.3 °C

  • Average High 2021–2026

    17.6 °C
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