Portland Offshore Weather Forecast

    • 9
    • 27

    Clear

    • 13
    • 31

    Sunny

    • 15
    • 26

    Possible shower

    • 13
    • 19

    Cloudy

    • 11
    • 17

    Showers

    • 11
    • 18

    Possible shower

    • 11
    • 17

    Possible shower

Today 17 Dec South West

Clear. Winds northwest to southwesterly 15 to 20 km/h tending southeast to southwesterly in the evening.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Variable below 10 knots.
Seas
Below 0.5 metres.
1st Swell
Southwesterly 1.5 metres.
Weather
Clear.
Weather Situation
A high pressure system in the Tasman Sea maintains a ridge across Victoria, until a broad area of low pressure develops to the west late Thursday. The low is forecast to slowly move across the state during Friday and Saturday, before another low and associated cold front move across Victoria on Sunday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Offshore Temperature Statistics View More

December Temperature

Cape Nelson Lighthouse (9km)

  • Lowest 5 December, 2025

    9.7 °C

  • Average December

    15 °C

  • Highest 3 December, 2025

    25.3 °C

Climate (2020–Present)

Cape Nelson Lighthouse (9km)

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  • Average Low 2020–2025

    11.8 °C

  • Average 2020–2025

    14.3 °C

  • Average High 2020–2025

    17.5 °C
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