Onion Bay Weather Forecast

    • 13
    • 17

    Rain

    • 12
    • 17

    Cloudy

    • 10
    • 16

    Shower

    • 10
    • 16

    Shower

    • 10
    • 17

    Cloudy

    • 10
    • 17

    Partly cloudy

    • 10
    • 17

    Shower

Today 17 May South West

Cloudy. Very high chance of showers in the east, high chance elsewhere. The chance of a thunderstorm in the late morning and afternoon. Light winds becoming south to southwesterly 15 to 20 km/h in the middle of the day then becoming light in the evening. Overnight temperatures falling to around 12 with daytime temperatures reaching around 18.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
Northwest to northeasterly 10 to 15 knots tending northwest to southwesterly in the late afternoon then becoming variable about 10 knots in the evening.
Seas
Below 1 metre.
1st Swell
West to southwesterly 1.5 metres, increasing to 1.5 to 2.5 metres in the west.
Weather
Cloudy. 95% chance of rain.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Onion Bay Temperature Statistics View More

May Temperature

Cape Otway (29km)

  • Lowest 7 May, 2026

    6.3 °C

  • Average May

    15.3 °C

  • Highest 1 May, 2026

    27.4 °C

Climate (2021–Present)

Cape Otway (29km)

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  • Average Low 2021–2026

    11.7 °C

  • Average 2021–2026

    14.2 °C

  • Average High 2021–2026

    17.4 °C
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