Portland Harbour Weather Forecast

    • 12
    • 16

    Showers

    • 10
    • 15

    Shower or two

    • 12
    • 18

    Shower or two

    • 12
    • 19

    Cloudy

    • 12
    • 22

    Partly cloudy

    • 14
    • 27

    Sunny

    • 17
    • 24

    Possible shower

Today 26 Mar South West

Cloudy. Very high chance of showers, most likely during the morning and afternoon. Snow falling above 1100 metres. The chance of a thunderstorm during this afternoon and evening. Possible small hail late this afternoon and evening. Winds southwesterly 25 to 35 km/h. Daytime maximum temperatures around 16.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Southwesterly 15 to 25 knots, reaching up to 30 knots during the afternoon and evening. Winds turning southerly 20 to 25 knots in the late afternoon.
Seas
1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
1st Swell
Southwesterly 2 to 3 metres.
Weather
Cloudy. 95% chance of showers. The chance of a thunderstorm during this afternoon and evening. Possible small hail during this afternoon and evening.
Weather Situation
A high pressure system to the east will allow a cold front to move over the state today. A cold southerly flow will follow during today and Friday. A new high pressure system south of the Bight on Friday, is expected to move slowly east towards Victoria on the weekend.
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

    16.9 °C

  • Highest 24 March, 2026

    25.9 °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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