Portland Harbour Weather Forecast

    • 11
    • 16

    Possible shower. Windy

    • 10
    • 16

    Cloudy

    • 10
    • 18

    Partly cloudy

    • 9
    • 29

    Sunny

    • 13
    • 27

    Sunny

    • 14
    • 22

    Possible shower

    • 12
    • 21

    Partly cloudy

Today 14 Dec South West

Cloudy. Medium chance of showers near the Otways, slight chance elsewhere. Winds westerly 30 to 45 km/h turning southwesterly in the middle of the day then decreasing to 25 to 35 km/h in the evening. Overnight temperatures falling to around 10 with daytime temperatures reaching between 17 and 21.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Westerly 20 to 30 knots turning southwesterly in the late morning.
Seas
1 to 2 metres, increasing to 2 to 3 metres during the morning.
1st Swell
Southwesterly 1.5 to 2 metres, increasing to 3 to 5 metres during the morning.
Weather
Cloudy.
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

    15.3 °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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