Sandstone Island Weather Forecast
- 14
- 20
Mostly clear
- 11
- 20
Rain
- 11
- 19
Possible shower
- 11
- 18
Shower or two
- 11
- 20
Possible shower. Windy
- 11
- 17
Cloudy
- 11
- 18
Cloudy
Today 20 Dec Mornington Peninsula
Mostly clear. Winds southerly 15 to 25 km/h becoming light in the late evening.
Western Port Local Waters
- Wind
- Southerly 10 to 15 knots decreasing to about 10 knots in the late evening.
- Seas
- Below 1 metre.
- Weather
- Mostly clear.
- Weather Situation
- A broad trough of low pressure lies over Victoria and Bass Strait and is expected to linger over the area this evening. A low pressure system south of the Bight will move east and combine with this trough over western Victoria early Sunday. The low pressure system will then deepen and slowly move south east across the State during Sunday to clear into eastern Bass Strait late Sunday. A high pressure ridge then builds across Victoria and Bass Strait during Monday. A weak cold front crosses Bass Strait during late Monday and early Tuesday with the ridge re-establishing itself from Tuesday to Thursday.
Sandstone Island Temperature Statistics View More
December Temperature
Cerberus (4km)
Lowest 3 December, 2025
6 °CAverage December
16.5 °CHighest 18 December, 2025
35.8 °C
Climate (2020–Present)
Cerberus (4km)
Average Low 2020–2025
10.1 °CAverage 2020–2025
14.5 °CAverage High 2020–2025
19.5 °C