St Andrews Beach Weather Forecast
- 12
- 28
Partly cloudy
- 15
- 21
Shower
- 12
- 19
Shower
- 11
- 17
Cloudy
- 11
- 18
Cloudy
- 11
- 27
Sunny
- 16
- 27
Partly cloudy
Today 12 Dec Mornington Peninsula
Mostly sunny. The chance of a thunderstorm in the afternoon and early evening. Winds northerly 25 to 35 km/h decreasing to 15 to 25 km/h in the middle of the day then turning east to northeasterly in the early afternoon.
Central Victoria Coastal Waters
Cape Otway to Wilsons Promontory- Wind
- East to northeasterly 10 to 15 knots, reaching up to 20 knots in the far east in the late morning and afternoon.
- Seas
- Around 1 metre, increasing to 1 to 1.5 metres in the far east.
- 1st Swell
- Southwesterly around 1 metre, increasing to 1 to 1.5 metres in the west.
- Weather
- Mostly sunny.
- Weather Situation
- A ridge of high pressure over Tasmania will clear into the Tasman Sea during the day with a trough lingering just across the NSW border along the east coast. A separate trough will then sweep across the state on Saturday, entering from the west in the early morning and clearing in the east by the evening. On Sunday a cold front will skim across the south with a new high pressure ridge developing in its wake on Monday.
St Andrews Beach Temperature Statistics View More
December Temperature
Cerberus (31km)
Lowest 3 December, 2025
6 °CAverage December
15.3 °CHighest 4 December, 2025
34 °C
Climate (2020–Present)
Cerberus (31km)
Average Low 2020–2025
10.1 °CAverage 2020–2025
14.5 °CAverage High 2020–2025
19.5 °C