Portland Offshore Weather Forecast

    • 11
    • 17

    Cloudy

    • 12
    • 17

    Cloudy

    • 11
    • 16

    Cloudy

    • 11
    • 17

    Cloudy

    • 11
    • 20

    Partly cloudy

    • 11
    • 26

    Sunny

    • 14
    • 28

    Mostly sunny

Today 23 Dec South West

Partly cloudy. Slight chance of a shower near the Otways, near zero chance elsewhere. Winds west to southwesterly 15 to 25 km/h.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Westerly 20 to 25 knots, reaching up to 30 knots in the far east.
Seas
2 to 2.5 metres.
1st Swell
Southwesterly 4 metres.
Weather
Cloudy.
Weather Situation
A ridge of high pressure will slowly develop from the west with the high pressure centre moving south of the state on Friday. The high will begin to weaken and move over Tasmania on Saturday but will maintain a broad ridge over the state.
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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

    15.6 °C

  • Highest 18 December, 2025

    34.6 °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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