Portland Harbour Weather Forecast

    • 11
    • 22

    Sunny

    • 15
    • 39

    Afternoon cool change

    • 15
    • 20

    Partly cloudy

    • 14
    • 27

    Sunny

    • 19
    • 33

    Mostly sunny

    • 16
    • 20

    Partly cloudy

    • 15
    • 20

    Cloudy

Today 23 Jan South West

Sunny. Winds northeast to southeasterly 15 to 20 km/h becoming light in the middle of the day then becoming northeast to southeasterly 15 to 25 km/h in the late afternoon. Overnight temperatures falling to around 8 with daytime temperatures reaching around 30.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Easterly 15 to 20 knots.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the afternoon.
1st Swell
Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres during the morning.
Weather
Sunny.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Harbour Temperature Statistics View More

January Temperature

Cape Nelson Lighthouse (11km)

  • Lowest 6 January, 2026

    11.4 °C

  • Average January

    16.6 °C

  • Highest 7 January, 2026

    32.6 °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

    17.5 °C
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