Portland Harbour Weather Forecast

    • 16
    • 24

    Cloudy

    • 15
    • 22

    Cloudy

    • 12
    • 23

    Partly cloudy

    • 14
    • 30

    Shower or two

    • 15
    • 21

    Showers. Becoming windy

    • 11
    • 17

    Cloudy

    • 11
    • 19

    Cloudy

Today 12 Mar South West

Partly cloudy. Slight chance of a shower. The chance of a thunderstorm early this evening, possibly severe. Winds west to southwesterly 20 to 30 km/h tending south to southwesterly 15 to 25 km/h in the evening.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Southwesterly 10 to 15 knots decreasing to about 10 knots in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres.
Weather
Cloudy.
Weather Situation
A trough lies through central coastal waters, connected to a low pressure system southwest of Tasmania. The trough is forecast to continue crossing Bass Strait this evening as a high pressure system crosses waters south of the Bight. The high is expected to be located near western Bass Strait by Thursday night before slowly crossing Bass Strait on Friday. On Saturday the high moves over the Tasman Sea and a cold front approaches from the west then crosses Bass Strait on Sunday.
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 5 March, 2025

    12.8 °C

  • Average March

    19.1 °C

  • Highest 9 March, 2025

    32.5 °C

Climate (2020–Present)

Cape Nelson Lighthouse (11km)

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  • Average Low 2020–2025

    11.7 °C

  • Average 2020–2025

    14.3 °C

  • Average High 2020–2025

    17.7 °C
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