Portland Bay Marina Weather Forecast

    • 15
    • 19

    Shower or two. Possible storm

    • 14
    • 20

    Becoming windy. Partly cloudy

    • 15
    • 22

    Windy. Mostly sunny

    • 15
    • 26

    Mostly sunny

    • 17
    • 24

    Shower or two

    • 16
    • 23

    Mostly sunny

    • 16
    • 22

    Partly cloudy

Today 15 Jan South West

Cloudy. Very high chance of showers near the Otways, medium chance elsewhere. The chance of a thunderstorm in the afternoon, possibly severe with heavy rain which may lead to flash flooding near the coast in the early afternoon. Winds southerly 30 to 45 km/h.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Southeasterly 20 to 25 knots turning southerly in the early afternoon. Winds reaching up to 30 knots during the afternoon and evening.
Seas
2 metres.
1st Swell
Southwesterly 1.5 metres, increasing to 1.5 to 2 metres in the east.
Weather
Cloudy. 60% chance of showers. The chance of a thunderstorm in the morning and early afternoon.
Weather Situation
A low pressure trough over eastern districts will continue to develop, forming a low pressure system to the north of the state by Thursday. This low will remain over southern NSW until it moves northward on the weekend, reducing its influence over Victorian waters. A high pressure system will also drift south of Tasmania over the coming days and will extend a ridge across the state on the weekend once the low shifts northwards.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portland Bay Marina Temperature Statistics View More

January Temperature

Cape Nelson Lighthouse (11km)

  • Lowest 6 January, 2026

    11.4 °C

  • Average January

    16.4 °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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