Portland Harbour Weather Forecast

    • 12
    • 18

    Partly cloudy

    • 9
    • 23

    Mostly sunny

    • 15
    • 21

    Shower or two

    • 11
    • 22

    Partly cloudy

    • 12
    • 25

    Mostly sunny

    • 15
    • 23

    Possible shower

    • 12
    • 19

    Possible shower

Today 20 Apr South West

Cloudy. Slight chance of a shower in the morning. The chance of morning fog. Light winds. Overnight temperatures falling to between 6 and 11 with daytime temperatures reaching between 19 and 22.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
South to southwesterly 10 to 15 knots becoming variable about 10 knots in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore around midday.
Weather
Partly cloudy.
Weather Situation
A ridge of high pressure extends over eastern parts of the State from east of Tasmania, whilst a weak trough drifts over central Victoria today. The ridge then dominates for much of the week. A cold front approaches from the west on Tuesday, brushing the south of the State on Wednesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Harbour Temperature Statistics View More

April Temperature

Cape Nelson Lighthouse (11km)

  • Lowest 19 April, 2026

    9.2 °C

  • Average April

    14.6 °C

  • Highest 9 April, 2026

    21.4 °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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