Portland Offshore Weather Forecast

    • 9
    • 15

    Showers

    • 10
    • 16

    Shower or two

    • 8
    • 17

    Partly cloudy

    • 6
    • 17

    Mostly sunny

    • 8
    • 17

    Cloudy

    • 9
    • 15

    Shower or two

    • 8
    • 15

    Shower or two

Today 19 May South West

Partly cloudy. The chance of morning fog. High chance of showers in the south, medium chance elsewhere. Light winds becoming west to southwesterly 20 to 30 km/h in the morning. Daytime maximum temperatures around 15.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
West to northwesterly 15 to 20 knots turning southwesterly in the early morning then tending westerly in the evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the morning.
1st Swell
Southwesterly 2 metres.
Weather
Partly cloudy. 90% chance of showers.
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

    15 °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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