Portland Bay Weather Forecast

    • 10
    • 19

    Cloudy

    • 11
    • 19

    Cloudy

    • 11
    • 18

    Cloudy

    • 11
    • 20

    Cloudy

    • 10
    • 25

    Cloud clearing

    • 11
    • 30

    Sunny

    • 14
    • 32

    Mostly sunny

Today 23 Dec South West

Cloudy. Medium chance of showers near the Otways, near zero chance elsewhere. Winds west to southwesterly 20 to 30 km/h decreasing to 15 to 20 km/h in the late evening. Daytime maximum temperatures between 19 and 22.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Westerly 15 to 25 knots, reaching up to 30 knots in the evening.
Seas
1.5 to 2 metres.
1st Swell
Southwesterly 2.5 to 3 metres, increasing to 3 to 4 metres around midday.
Weather
Cloudy.
Weather Situation
A weak cold front will sweep through the eastern coastal fringes early this morning. Behind this, a ridge of high pressure re-develops and persists across Victoria this week, with the high pressure centre expected to slowly move through Bass Strait from Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Bay Temperature Statistics View More

December Temperature

Portland Airport (25km)

  • Lowest 5 December, 2025

    6.9 °C

  • Average December

    15 °C

  • Highest 18 December, 2025

    34.4 °C

Climate (2020–Present)

Portland Airport (25km)

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  • Average Low 2020–2025

    9.6 °C

  • Average 2020–2025

    13.4 °C

  • Average High 2020–2025

    18.1 °C
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