Portland Bay Weather Forecast

    • 9
    • 15

    Cloudy

    • 7
    • 16

    Cloudy

    • 9
    • 17

    Shower or two

    • 8
    • 15

    Shower or two

    • 8
    • 16

    Partly cloudy

    • 6
    • 18

    Partly cloudy

    • 8
    • 17

    Shower or two

Today 22 Aug South West

Cloudy. Medium chance of showers, becoming less likely in the afternoon. Winds westerly 20 to 25 km/h tending southwesterly 15 to 25 km/h in the middle of the day then becoming light in the evening. Daytime maximum temperatures around 15.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Southwesterly 15 to 20 knots turning westerly 10 to 15 knots in the late afternoon.
Seas
2 to 2.5 metres, decreasing to 1 to 1.5 metres around midday, then decreasing to 1 metre by early evening.
1st Swell
Southwesterly 4 to 5 metres.
Weather
Cloudy.
Weather Situation
A ridge of high pressure over northern parts of the State will remain throughout the weekend as a couple of cold fronts pass well to the south in a broad westerly flow. The ridge will weaken and move over the Tasman Sea on Monday and a low pressure system and associated trough will approach from the west, moving to the north of the State on Tuesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Bay Temperature Statistics View More

August Temperature

Portland Airport (25km)

  • Lowest 2 August, 2026

    2.2 °C

  • Average August

    10.6 °C

  • Highest 19 August, 2026

    17.6 °C

Climate (2021–2026)

Portland Airport (25km)

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  • Average Low 2021–2026

    9.7 °C

  • Average 2021–2026

    13.5 °C

  • Average High 2021–2026

    18.2 °C
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