Portland Bay Marina Weather Forecast

    • 10
    • 16

    Possible shower

    • 10
    • 16

    Possible shower

    • 9
    • 17

    Cloudy

    • 7
    • 19

    Sunny

    • 9
    • 20

    Partly cloudy

    • 10
    • 21

    Possible shower

    • 11
    • 21

    Shower or two

Today 9 May South West

Cloudy. Medium chance of showers, becoming less likely this afternoon. Light winds becoming south to southwesterly 15 to 20 km/h in the morning then becoming light in the evening. Daytime maximum temperatures around 16.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
South to southwesterly 10 to 15 knots.
Seas
Around 1 metre.
1st Swell
Southwesterly 3 to 4 metres, decreasing to 3 metres around midday.
Weather
Cloudy. 50% chance of showers.
Weather Situation
A large high pressure system in the Bight continues to build and will slowly drift eastwards over the coming days, moving south of Victoria early next week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Bay Marina Temperature Statistics View More

May Temperature

Cape Nelson Lighthouse (11km)

  • Lowest 7 May, 2026

    6.7 °C

  • Average May

    15.3 °C

  • Highest 1 May, 2026

    28.1 °C

Climate (2021–Present)

Cape Nelson Lighthouse (11km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    11.8 °C

  • Average 2021–2026

    14.3 °C

  • Average High 2021–2026

    17.6 °C
Get WillyWeather+ to remove ads