Portland Bay Weather Forecast

    • 10
    • 18

    Shower or two

    • 7
    • 16

    Possible shower

    • 4
    • 17

    Partly cloudy

    • 8
    • 20

    Shower or two

    • 11
    • 18

    Showers

    • 7
    • 14

    Showers

    • 6
    • 13

    Showers

Today 22 Aug South West

Partly cloudy. Medium chance of showers. Winds north to northwesterly 15 to 25 km/h becoming light in the late evening.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Northerly 15 to 20 knots turning west to northwesterly in the afternoon.
Seas
Around 1 metre, increasing to 1 to 1.5 metres offshore.
1st Swell
West to southwesterly 2 to 3 metres, increasing to 2.5 to 4 metres in the far west.
Weather
Cloudy. 70% chance of showers.
Weather Situation
A pair of weakening cold fronts will move across the west and south later today and early Saturday then a high pressure system moves in quickly, to be centred over southwestern Victoria late Saturday then moving east on Sunday. On Monday northerly flow will increase over Victoria as another cold front approaches, the first of a series which will bring wet and windy conditions during next week.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Bay Temperature Statistics View More

August Temperature

Portland Airport (25km)

  • Lowest 20 August, 2025

    0.3 °C

  • Average August

    9.9 °C

  • Highest 11 August, 2025

    18.4 °C

Climate (2020–Present)

Portland Airport (25km)

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  • Average Low 2020–2025

    9.7 °C

  • Average 2020–2025

    13.5 °C

  • Average High 2020–2025

    18.1 °C
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