Sand Island Weather Forecast
- 15
- 22
Shower
- 14
- 20
Rain
- 10
- 16
Rain
- 11
- 17
Shower
- 10
- 16
Cloudy
- 6
- 17
Partly cloudy
- 10
- 17
Shower
Today 30 Sep Central
Cloudy. High chance of showers near the Otways, medium chance elsewhere. The chance of a thunderstorm in the southeast later this evening. Winds northerly 20 to 30 km/h.
Port Phillip Local Waters
- Wind
- Northerly 15 to 20 knots.
- Seas
- 1 to 1.5 metres, decreasing below 1 metre later in the evening.
- Weather
- Cloudy.
- Weather Situation
- A weakening high pressure ridge will begin to clear in the east as series of troughs enter western Victoria. These troughs will move across the rest of the state on Thursday before a broad low pressure system develops across the north on Friday. This low is expected to be relatively slow moving, drifting into eastern Bass Strait by Saturday before clearing into the Tasman Sea on Sunday as weak high pressure ridge develops in the west.
Sand Island Temperature Statistics View More
September Temperature
Avalon Airport (30km)
Lowest 18 September, 2026
0.7 °CAverage September
12.9 °CHighest 20 September, 2026
30.4 °C
Climate (2021–2026)
Avalon Airport (30km)
Average Low 2021–2026
9.8 °CAverage 2021–2026
14.6 °CAverage High 2021–2026
20.6 °C