Portland Bay Weather Forecast

    • 9
    • 19

    Partly cloudy

    • 8
    • 20

    Cloud clearing

    • 8
    • 26

    Mostly sunny

    • 12
    • 20

    Partly cloudy

    • 10
    • 20

    Shower or two. Becoming windy

    • 10
    • 18

    Cloudy

    • 9
    • 20

    Partly cloudy

Today 10 Dec South West

Cloudy. Medium chance of showers in the north, most likely in the afternoon. Near zero chance of rain elsewhere. Winds southeasterly 15 to 20 km/h becoming light before dawn then becoming south to southeasterly 15 to 25 km/h in the early afternoon. Overnight temperatures falling to between 6 and 9 with daytime temperatures reaching between 18 and 21.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
East to southeasterly about 10 knots tending south to southeasterly 10 to 15 knots in the late afternoon.
Seas
Below 1 metre.
1st Swell
Southwesterly 3 to 4 metres, decreasing to 2.5 to 3 metres during the morning.
Weather
Partly cloudy.
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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

    14.2 °C

  • Highest 4 December, 2025

    26.4 °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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