Portland Offshore Weather Forecast

    • 18
    • 26

    Rain increasing. Wind easing

    • 11
    • 19

    Showers easing

    • 10
    • 16

    Showers

    • 10
    • 16

    Shower or two

    • 8
    • 17

    Showers

    • 7
    • 13

    Shower or two

    • 9
    • 15

    Showers

Today 2 May South West

Partly cloudy. Very high chance of rain, most likely late this afternoon and evening. Winds northeasterly 20 to 30 km/h turning northerly 30 to 45 km/h during the morning then decreasing to 25 to 35 km/h in the late afternoon. Daytime maximum temperatures in the mid to high 20s.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Northeasterly 15 to 25 knots turning northerly in the morning.
Seas
1 to 1.5 metres, increasing to 1.5 to 2 metres offshore.
1st Swell
Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres during the afternoon, then increasing to 1.5 to 2 metres by early evening.
Weather
Partly cloudy. 95% chance of rain.
Weather Situation
A high pressure system over the southern Tasman Sea drifts slowly away to the east today, while a cold front and low pressure system develops south of the Bight. The cold front is expected to slowly cross Bass Strait during late Saturday and into Sunday. The low pressure system is then expected to move over Bass Strait or southern Victoria on Monday with a southwesterly airstream in its wake.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Offshore Temperature Statistics View More

May Temperature

Cape Nelson Lighthouse (9km)

  • Lowest 1 May, 2026

    17.9 °C

  • Average May

    20.2 °C

  • Highest

    –

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

    17.6 °C
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