Onion Bay Weather Forecast

    • 18
    • 25

    Partly cloudy

    • 14
    • 21

    Cloudy

    • 14
    • 28

    Sunny

    • 18
    • 28

    Partly cloudy

    • 15
    • 21

    Shower

    • 10
    • 15

    Shower

    • 8
    • 14

    Shower

Today 20 Oct South West

Partly cloudy. The chance of a thunderstorm. Light winds.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
Northwest to northeasterly 10 to 15 knots.
Seas
Below 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2 metres in the far west.
Weather
Partly cloudy.
Weather Situation
A high pressure system centred over the Tasman Sea will drift slowly eastwards throughout this week. A weak trough will move over western Victoria tonight and Wednesday, before a cold front approaches from the west on Friday, crossing the State over the weekend.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Onion Bay Temperature Statistics View More

October Temperature

Cape Otway (29 km)

  • Lowest 5 October, 2026

    7.9 °C

  • Average October

    14.4 °C

  • Highest 9 October, 2026

    26.1 °C

Climate (2021–2026)

Cape Otway (29 km)

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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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