Portland Offshore Weather Forecast

    • 16
    • 21

    Clear

    • 15
    • 20

    Shower or two

    • 13
    • 18

    Partly cloudy

    • 11
    • 22

    Sunny

    • 15
    • 35

    Mostly sunny

    • 15
    • 22

    Mostly sunny

    • 14
    • 25

    Mostly sunny

Today 20 Jan South West

Clear. Winds south to southeasterly 20 to 30 km/h decreasing to 15 to 20 km/h in the late evening.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Southeasterly 15 to 20 knots, reaching up to 25 knots inshore during the afternoon and evening.
Seas
1 to 1.5 metres, increasing to 1.5 to 2 metres inshore.
1st Swell
Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2 metres in the far west.
Weather
Clear.
Weather Situation
A low pressure trough over western districts will move slowly northeastwards today. A high pressure system moves into waters south of the Bight and extends a ridge over western Victoria and more broadly over the state on Thursday. The high then moves into the Tasman Sea on Friday, followed by a trough of low pressure over the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Offshore Temperature Statistics View More

January Temperature

Cape Nelson Lighthouse (9km)

  • 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 (9km)

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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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