Portland Harbour Weather Forecast

    • 10
    • 18

    Windy. Partly cloudy

    • 9
    • 17

    Partly cloudy

    • 10
    • 21

    Shower or two

    • 11
    • 18

    Partly cloudy

    • 10
    • 17

    Partly cloudy

    • 10
    • 18

    Partly cloudy

    • 9
    • 27

    Mostly sunny

Today 6 Dec South West

Partly cloudy. Medium chance of showers near the Otways, slight chance elsewhere. The chance of a thunderstorm near the coast later this evening. Winds westerly 25 to 40 km/h decreasing to 20 to 30 km/h in the late evening.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Westerly 20 to 30 knots.
Seas
2 to 2.5 metres.
1st Swell
Westerly 2.5 to 3 metres.
Weather
Partly cloudy. 50% chance of showers. The chance of a thunderstorm later this evening.
Weather Situation
A cold front will continue to move over eastern parts Saturday evening. A ridge of high pressure then builds over the state during Sunday, lingering on Monday, before another cold front clips the south on Monday and into Tuesday. A new ridge moves over the State on Tuesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Harbour Temperature Statistics View More

December Temperature

Cape Nelson Lighthouse (11km)

  • Lowest 5 December, 2025

    9.7 °C

  • Average December

    15.7 °C

  • Highest 3 December, 2025

    25.3 °C

Climate (2020–Present)

Cape Nelson Lighthouse (11km)

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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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