Portland Bay Marina Weather Forecast

    • 7
    • 19

    Morning fog then sunny

    • 9
    • 20

    Partly cloudy

    • 9
    • 21

    Partly cloudy

    • 12
    • 20

    Showers increasing

    • 12
    • 19

    Showers

    • 11
    • 18

    Showers

    • 11
    • 17

    Showers

Today 12 May South West

Patchy morning fog. Sunny afternoon. Light winds becoming east to northeasterly 15 to 20 km/h in the middle of the day then becoming light in the late afternoon. Daytime maximum temperatures in the low 20s.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Easterly 10 to 15 knots.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 to 2.5 metres.
Weather
Sunny.
Weather Situation
A large high pressure system south of Victoria extends a ridge over the state, which will persist for most of the week as the high centre moves over the Tasman Sea. A cold front is expected to approach from the southwest late Friday.
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

    14.9 °C

  • Highest 1 May, 2026

    28.1 °C

Climate (2021–Present)

Cape Nelson Lighthouse (11km)

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  • Average Low 2021–2026

    11.8 °C

  • Average 2021–2026

    14.3 °C

  • Average High 2021–2026

    17.6 °C
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