Portland Bay Marina Weather Forecast

    • 10
    • 16

    Cloudy

    • 10
    • 18

    Partly cloudy

    • 9
    • 28

    Sunny

    • 13
    • 31

    Sunny

    • 15
    • 25

    Possible shower

    • 14
    • 20

    Partly cloudy

    • 12
    • 20

    Shower or two

Today 15 Dec South West

Cloudy. Medium chance of showers near the Otways, most likely in the morning and early afternoon. Near zero chance of rain elsewhere. Winds southwesterly 25 to 35 km/h turning southerly 20 to 30 km/h in the late afternoon. Overnight temperatures falling to around 8 with daytime temperatures reaching around 18.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Southwesterly 15 to 20 knots, reaching up to 25 knots in the east early in the morning. Winds decreasing to about 10 knots in the late evening.
Seas
1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning.
1st Swell
Southwesterly 4 to 5 metres.
Weather
Cloudy.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Bay Marina 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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