Koonya Ocean Beach Weather Forecast
- 12
- 23
Shower
- 14
- 18
Shower
- 12
- 18
Partly cloudy
- 11
- 18
Partly cloudy
- 12
- 25
Partly cloudy
- 16
- 23
Shower
- 13
- 20
Shower
Today 8 Dec Mornington Peninsula
Partly cloudy. Medium chance of showers. Winds west to northwesterly 20 to 30 km/h turning southwesterly 15 to 20 km/h in the late afternoon then becoming light in the late evening.
Port Phillip Local Waters
- Wind
- Northwesterly 10 to 15 knots turning west to southwesterly below 10 knots in the late afternoon.
- Seas
- Below 1 metre.
- Weather
- Partly cloudy. 50% chance of showers.
- Weather Situation
- A ridge of high pressure strengthens over the state, before a cold front clips the south later today and into Tuesday. A new ridge of high pressure extends over the State Tuesday to Wednesday before the high moves to the south, to be centred east of Tasmania later Thursday.
Koonya Ocean Beach Temperature Statistics View More
December Temperature
Cerberus (37km)
Lowest 3 December, 2025
6 °CAverage December
15.5 °CHighest 4 December, 2025
34 °C
Climate (2020–Present)
Cerberus (37km)
Average Low 2020–2025
10.1 °CAverage 2020–2025
14.5 °CAverage High 2020–2025
19.5 °C