Onion Bay Weather Forecast

    • 6
    • 15

    Partly cloudy

    • 5
    • 15

    Partly cloudy

    • 7
    • 14

    Partly cloudy

    • 8
    • 14

    Cloudy

    • 8
    • 13

    Shower

    • 6
    • 11

    Shower

    • 7
    • 13

    Shower

Today 18 Jul South West

Patchy morning fog. Mostly sunny afternoon. Light winds becoming northerly 15 to 20 km/h in the middle of the day then becoming light in the early afternoon. Overnight temperatures falling to between 2 and 5 with daytime temperatures reaching around 14.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
West to northwesterly about 10 knots increasing to 10 to 15 knots in the morning then becoming variable about 10 knots in the early afternoon.
Seas
Below 1 metre.
1st Swell
Southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres in the far west.
Weather
Partly cloudy.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Onion Bay Temperature Statistics View More

July Temperature

Cape Otway (29km)

  • Lowest 10 July, 2026

    5 °C

  • Average July

    11.3 °C

  • Highest 1 July, 2026

    17.5 °C

Climate (2021–2026)

Cape Otway (29km)

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  • Average Low 2021–2026

    11.7 °C

  • Average 2021–2026

    14.3 °C

  • Average High 2021–2026

    17.4 °C
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