Onion Bay Weather Forecast

    • 10
    • 12

    Shower

    • 7
    • 12

    Shower

    • 9
    • 11

    Shower

    • 8
    • 12

    Windy

    • 7
    • 14

    Windy

    • 6
    • 14

    Partly cloudy

    • 7
    • 13

    Shower

Today 2 Jul South West

Cloudy. Very high chance of showers. Snow falling above 900 metres. The chance of a thunderstorm, possibly severe with damaging winds near the coast. Winds northwesterly 25 to 35 km/h.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
Northwesterly 25 to 30 knots, reaching up to 35 knots offshore in the late morning and early afternoon and again in the late evening.
Seas
2.5 to 3 metres, increasing to 3 to 4 metres in the far east.
1st Swell
Southwesterly 1 to 1.5 metres, increasing to 1 to 2 metres around midday, then tending west to southwesterly 2 to 3 metres during the afternoon.
Weather
Cloudy. Near 100% chance of rain. The chance of a thunderstorm in the late afternoon and evening.
Weather Situation
A cold front approaching the west crosses the state during today, shifting winds westerly ahead of a secondary cold front to cross over Victoria during Friday, shifting winds to a colder southwesterly flow. A high pressure system moves over the Bight during the weekend, extending a ridge over the southeast of the country.
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  • Temperature Forecast Bureau of Meteorology

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Onion Bay Temperature Statistics View More

July Temperature

Cape Otway (29km)

  • Lowest 1 July, 2026

    11.9 °C
  • Average July

    13.1 °C
  • Highest

Climate (2021–2026)

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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