Portland Bay Weather Forecast

    • 9
    • 15

    Showers

    • 7
    • 15

    Showers increasing

    • 7
    • 14

    Showers easing

    • 8
    • 15

    Showers

    • 8
    • 15

    Shower or two

    • 6
    • 15

    Possible shower

    • 6
    • 15

    Partly cloudy

Today 10 Aug South West

Cloudy. Very high chance of showers, becoming less likely in the late afternoon and evening. Winds southwesterly 25 to 35 km/h turning westerly 15 to 20 km/h in the late evening. Daytime maximum temperatures between 12 and 15.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
South to southwesterly 20 to 25 knots, reaching up to 30 knots in the afternoon. Winds tending west to southwesterly 15 to 25 knots during the afternoon and evening.
Seas
1.5 to 2 metres.
1st Swell
Southwesterly 3 metres, increasing to 3 to 4 metres during the afternoon.
Weather
Partly cloudy. 70% chance of showers.
Weather Situation
A low pressure system over western Victoria will then slowly move over the state towards eastern Bass Strait during this morning, while extending a trough over western and central Victoria during this afternoon and early evening. A ridge of high pressure will build over Victoria on Tuesday, ahead of a cold front to cross the state early on Wednesday. A high pressure system is expected to build over the Bight on Thursday and extend a ridge across Victoria.
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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

    9.5 °C

  • Highest 8 August, 2026

    16.4 °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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