Sand Island Weather Forecast
- 12
- 30
Sunny
- 16
- 26
Windy
- 11
- 18
Cloudy
- 12
- 21
Sunny
- 13
- 26
Partly cloudy
- 14
- 29
Partly cloudy
- 15
- 24
Cloudy
Today 29 Dec Central
Sunny. Light winds becoming northwest to northeasterly 15 to 20 km/h in the morning then tending northeast to southeasterly in the early afternoon. Daytime maximum temperatures 29 to 35.
Port Phillip Local Waters
- Wind
- East to southeasterly about 10 knots increasing to 10 to 15 knots in the late afternoon.
- Seas
- Below 1 metre.
- Weather
- Sunny.
- Weather Situation
- A high pressure system over the Tasman Sea is extending a ridge over Victoria. A trough will slowly cross from the west during Tuesday, and linger about the northeast on Wednesday as a high pressure system south of the Bight extends a ridge over Tasmania. On Thursday, Victoria will lie between a ridge over Tasmania and a trough in central NSW.
Sand Island Temperature Statistics View More
December Temperature
Avalon Airport (30km)
Lowest 7 December, 2025
6.6 °CAverage December
16.6 °CHighest 18 December, 2025
39.5 °C
Climate (2020–Present)
Avalon Airport (30km)
Average Low 2020–2025
9.6 °CAverage 2020–2025
14.5 °CAverage High 2020–2025
20.4 °C