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.
Onion Bay Temperature Statistics View More
July Temperature
Cape Otway (29km)
Lowest 1 July, 2026
11.9 °CAverage July
13.1 °CHighest
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Climate (2021–2026)
Cape Otway (29km)
Average Low 2021–2026
11.7 °CAverage 2021–2026
14.2 °CAverage High 2021–2026
17.4 °C