Portland Bay Weather Forecast

    • 11
    • 17

    Shower or two

    • 10
    • 17

    Shower or two

    • 10
    • 18

    Rain

    • 5
    • 14

    Showers

    • 9
    • 17

    Showers easing

    • 10
    • 17

    Shower or two

    • 10
    • 17

    Shower or two

Today 4 May South West

Cloudy. High chance of showers. The chance of a thunderstorm early this evening. Winds northwesterly 25 to 40 km/h turning westerly 20 to 30 km/h in the evening.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Northwest to southwesterly 25 to 30 knots tending southwesterly in the evening.
Seas
2 to 3 metres.
1st Swell
Southwesterly 1.5 to 2.5 metres.
Weather
Cloudy. 90% chance of showers. The chance of a thunderstorm early this evening.
Weather Situation
A low pressure system will weaken as it moves through Bass Strait overnight Monday. A ridge of high pressure extends over northern Victoria during Tuesday ahead of a cold front approaching from the Bight. This front is forecast to cross Bass Strait between late Wednesday and early Thursday. A low pressure system may form in the Tasman Sea near the eastern Victorian coast during Thursday, before moving away to the east early Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Bay Temperature Statistics View More

May Temperature

Portland Airport (25km)

  • Lowest 3 May, 2026

    10.6 °C

  • Average May

    18.4 °C

  • Highest 1 May, 2026

    27.3 °C

Climate (2021–Present)

Portland Airport (25km)

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  • Average Low 2021–2026

    9.6 °C

  • Average 2021–2026

    13.5 °C

  • Average High 2021–2026

    18.1 °C
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