Onion Bay Weather Forecast
- 14
- 20
Rain
- 11
- 17
Shower
- 12
- 15
Shower
- 9
- 17
Shower
- 7
- 12
Shower
- 7
- 14
Shower
- 9
- 15
Shower
Today 3 May South West
Partly cloudy. Very high chance of rain, most likely in the early morning. The chance of a thunderstorm. Winds northerly 25 to 40 km/h. Overnight temperatures falling to between 10 and 13 with daytime temperatures reaching between 17 and 21.
Central Victoria Coastal Waters
Cape Otway to Wilsons Promontory- Wind
- Northeasterly 15 to 20 knots, reaching up to 25 knots in the far west early in the morning. Winds turning northerly during the morning.
- Seas
- 1 to 1.5 metres, decreasing to 1 metre during the afternoon.
- 1st Swell
- Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2.5 metres offshore during the afternoon.
- Weather
- Cloudy. 95% chance of rain. The chance of a thunderstorm in the afternoon and evening.
Onion Bay Temperature Statistics View More
May Temperature
Cape Otway (29km)
Lowest 1 May, 2026
19 °CAverage May
22 °CHighest 1 May, 2026
27.4 °C
Climate (2021–Present)
Cape Otway (29km)
Average Low 2021–2026
11.7 °CAverage 2021–2026
14.2 °CAverage High 2021–2026
17.4 °C