Portland Harbour Weather Forecast

    • 12
    • 22

    Partly cloudy

    • 15
    • 23

    Shower or two

    • 14
    • 21

    Showers

    • 12
    • 15

    Shower or two

    • 10
    • 15

    Possible shower

    • 11
    • 17

    Cloudy

    • 11
    • 19

    Partly cloudy

Today 23 Mar South West

Patchy morning fog. Mostly sunny afternoon. Light winds becoming south to southeasterly 15 to 20 km/h in the late afternoon then tending east to southeasterly 15 to 25 km/h in the evening. Overnight temperatures falling to around 12 with daytime temperatures reaching 25 to 30.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Variable about 10 knots becoming east to southeasterly 10 to 15 knots in the late afternoon.
Seas
Below 1 metre.
1st Swell
Southwesterly 1.5 to 2 metres.
Weather
Partly cloudy.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Harbour Temperature Statistics View More

March Temperature

Cape Nelson Lighthouse (11km)

  • Lowest 10 March, 2026

    11.3 °C

  • Average March

    16.7 °C

  • Highest 1 March, 2026

    23.3 °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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