Portland Offshore Weather Forecast

    • 10
    • 16

    Cloudy

    • 10
    • 16

    Cloudy

    • 11
    • 19

    Cloudy

    • 10
    • 27

    Sunny

    • 14
    • 32

    Mostly sunny

    • 15
    • 21

    Shower or two

    • 11
    • 17

    Possible shower

Today 25 Dec South West

Cloudy. Slight chance of a shower near the Otways, near zero chance elsewhere. Winds southerly 20 to 30 km/h.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Southwesterly 15 to 20 knots, reaching up to 25 knots in the far east in the late afternoon. Winds turning southerly in the evening.
Seas
1.5 metres, increasing to 1.5 to 2 metres in the far east.
1st Swell
Southwesterly 4 metres.
Weather
Cloudy.
Weather Situation
A high pressure system south of the Bight extends a broad ridge east over coastal waters. The high is expected to slowly move east over Tasmania on Saturday and the Tasman Sea on Sunday while maintaining a ridge over waters. This ridge will begin clearing as a trough enters the West Coast late on Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Offshore Temperature Statistics View More

December Temperature

Cape Nelson Lighthouse (9km)

  • Lowest 5 December, 2025

    9.7 °C

  • Average December

    15.5 °C

  • Highest 18 December, 2025

    34.6 °C

Climate (2020–Present)

Cape Nelson Lighthouse (9km)

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  • Average Low 2020–2025

    11.8 °C

  • Average 2020–2025

    14.3 °C

  • Average High 2020–2025

    17.5 °C
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