Portland Offshore Weather Forecast

    • 10
    • 15

    Cloudy

    • 9
    • 15

    Shower or two

    • 8
    • 14

    Possible shower

    • 6
    • 15

    Partly cloudy

    • 6
    • 17

    Mostly sunny

    • 7
    • 18

    Possible shower developing

    • 10
    • 16

    Showers

Today 13 Aug South West

Cloudy. High chance of light showers near the Otways, slight chance elsewhere. Winds westerly 15 to 25 km/h becoming light in the evening.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Westerly 15 to 20 knots, reaching up to 25 knots in the far east in the evening.
Seas
1.5 metres, increasing to 1.5 to 2 metres in the far east.
1st Swell
Southwesterly 4 to 5 metres.
Weather
Partly cloudy. 60% chance of showers.
Weather Situation
A high pressure system developing south of the Bight extends a ridge over Victoria. The high pressure system will drift slowly to the southeast over Tasmania over the weekend and centred over the Tasman Sea by early next week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Offshore Temperature Statistics View More

August Temperature

Cape Nelson Lighthouse (9km)

  • Lowest 1 August, 2026

    5.6 °C

  • Average August

    11.2 °C

  • Highest 2 August, 2026

    15.7 °C

Climate (2021–2026)

Cape Nelson Lighthouse (9km)

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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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