Prime Beach Weather Forecast
- 13
- 28
Sunny
- 15
- 32
Cloudy
- 17
- 34
Sunny
- 19
- 37
Partly cloudy
- 16
- 25
Partly cloudy
- 13
- 23
Partly cloudy
- 14
- 23
Cloudy
Today 9 Dec Mid North
Sunny. Winds northeast to southeasterly 15 to 20 km/h tending southeast to southwesterly 20 to 30 km/h in the middle of the day then becoming southeasterly 15 to 25 km/h in the late evening. Daytime maximum temperatures in the low to mid 30s.
Gulf St Vincent Coastal Waters
- Wind
- South to southeasterly 15 to 20 knots.
- Seas
- Below 1 metre, increasing to 1 to 1.5 metres during the afternoon.
- 1st Swell
- South to southwesterly below 1 metre.
- Weather
- Mostly sunny.
- Weather Situation
- A broad ridge extends over inland parts of the state, another high pressure system develops south of the Bight, strengthening the ridge over the state ahead of a trough of low pressure developing across the far northwest late Tuesday persisting late into the week.
Prime Beach Temperature Statistics View More
December Temperature
Roseworthy (32km)
Lowest 7 December, 2025
4.4 °CAverage December
19 °CHighest 4 December, 2025
39.3 °C
Climate (2020–Present)
Roseworthy (32km)
Average Low 2020–2025
9.7 °CAverage 2020–2025
16.2 °CAverage High 2020–2025
23.6 °C