Portland Harbour Weather Forecast

    • 11
    • 16

    Shower or two

    • 12
    • 18

    Shower or two

    • 11
    • 19

    Cloudy

    • 11
    • 23

    Partly cloudy

    • 14
    • 27

    Mostly sunny

    • 17
    • 23

    Shower or two

    • 12
    • 21

    Mostly sunny

Today 27 Mar South West

Cloudy. High chance of showers near the Otways, slight chance elsewhere. Winds southerly 30 to 45 km/h decreasing to 25 to 35 km/h in the evening then turning southwesterly 15 to 25 km/h in the late evening. Daytime maximum temperatures around 16.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Southerly 15 to 25 knots decreasing to 10 to 15 knots in the late evening.
Seas
1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the afternoon.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Cloudy. 60% chance of showers.
Weather Situation
A low pressure system will continue to develop off the east coast today, before slowly moving eastwards over the Tasman Sea into Saturday. Meanwhile a high pressure system in the Bightwill push into the west and will centre itself over Victoria on Sunday before drifting eastwards in the new week.
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

    16.8 °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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