Round Island Weather Forecast
- 11
- 24
Shower or two
- 13
- 19
Possible early shower
- 11
- 18
Partly cloudy
- 11
- 18
Mostly sunny
- 12
- 26
Mostly sunny
- 16
- 24
Shower or two
- 12
- 19
Shower or two. Becoming windy
Today 8 Dec Central
Partly cloudy. Medium chance of showers near the coast, slight chance elsewhere. Winds north to northwesterly 20 to 30 km/h tending west to northwesterly 25 to 35 km/h in the late morning and early afternoon then decreasing to 15 to 25 km/h in the evening. Daytime maximum temperatures in the mid to high 20s.
Western Port Local Waters
- Wind
- Northwesterly 10 to 15 knots shifting south to southwesterly in the evening.
- 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.
Round Island Temperature Statistics View More
December Temperature
Cerberus (18km)
Lowest 3 December, 2025
6 °CAverage December
15.5 °CHighest 4 December, 2025
34 °C
Climate (2020–Present)
Cerberus (18km)
Average Low 2020–2025
10.1 °CAverage 2020–2025
14.5 °CAverage High 2020–2025
19.5 °C