Portland Harbour Weather Forecast

    • 11
    • 15

    Possible shower

    • 8
    • 15

    Partly cloudy

    • 5
    • 17

    Partly cloudy

    • 9
    • 15

    Showers easing

    • 7
    • 16

    Partly cloudy

    • 7
    • 21

    Sunny

    • 13
    • 20

    Showers

Today 3 Oct South West

Cloudy. High chance of rain, becoming less likely late this afternoon and evening. The chance of a thunderstorm about the ranges during the morning and afternoon. Heavy falls in the southeast. Winds southeasterly 25 to 35 km/h turning southerly 15 to 20 km/h during the afternoon and evening. Daytime maximum temperatures around 15.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Southeasterly 20 to 25 knots, reaching up to 30 knots during the morning. Winds turning southerly 10 to 15 knots during the afternoon and evening.
Seas
1.5 to 2.5 metres, decreasing to 1.5 metres by early evening.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Partly cloudy.
Weather Situation
A broad low pressure system developing across northern Victoria will slowly drift southeastward on Saturday with a series of associated troughs moving over the state. This low is expected to move into eastern Bass Strait by the early hours of Sunday then out to the Tasman Sea by Monday as a weak high pressure system extends over the State from the west. The high will clear as a cold front crosses Bass Strait on Tuesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Harbour Temperature Statistics View More

October Temperature

Cape Nelson Lighthouse (11km)

  • Lowest 2 October, 2026

    11.8 °C

  • Average October

    13.7 °C

  • Highest 1 October, 2026

    15.8 °C

Climate (2021–2026)

Cape Nelson Lighthouse (11km)

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  • Average Low 2021–2026

    11.9 °C

  • Average 2021–2026

    14.4 °C

  • Average High 2021–2026

    17.6 °C
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