Onion Bay Weather Forecast

    • 7
    • 14

    Shower

    • 8
    • 13

    Rain

    • 7
    • 13

    Rain

    • 7
    • 13

    Shower

    • 7
    • 12

    Shower

    • 8
    • 14

    Shower

    • 9
    • 14

    Shower

Today 8 Aug South West

Cloudy. High chance of showers, most likely in the late afternoon and evening. Winds northerly 20 to 30 km/h. Overnight temperatures falling to around 6 with daytime temperatures reaching around 14.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
Northerly 15 to 20 knots turning northeasterly during the afternoon and evening. Winds reaching up to 30 knots in the west in the late evening.
Seas
Around 1 metre, increasing to 1 to 2 metres during the morning.
1st Swell
Southwesterly 1.5 to 2.5 metres.
Weather
Partly cloudy.
Weather Situation
A high pressure system to the northeast that extends a ridge over the state will be slowly weakening and drifting eastwards during today. A vigorous cold front will begin to approach from the west on Sunday, reaching central districts during the evening. This front is expected to develop a low pressure system that will move through Bass Strait on Monday morning, drawing a trough over the state. A second cold front is expected to follow this low, crossing Victoria on Tuesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Onion Bay Temperature Statistics View More

August Temperature

Cape Otway (29km)

  • Lowest 1 August, 2026

    6.4 °C

  • Average August

    10.8 °C

  • Highest 2 August, 2026

    16.4 °C

Climate (2021–2026)

Cape Otway (29km)

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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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