Prime Beach Weather Forecast
- 16
- 36
Sunny
- 20
- 39
Sunny
- 17
- 26
Partly cloudy
- 14
- 25
Partly cloudy
- 13
- 28
Sunny
- 14
- 30
Partly cloudy
- 15
- 29
Partly cloudy
Today 28 Dec Mid North
Sunny. Winds east to northeasterly 15 to 20 km/h tending east to southeasterly 15 to 25 km/h in the early afternoon. Daytime maximum temperatures in the mid to high 30s.
Gulf St Vincent Coastal Waters
- Wind
- Variable about 10 knots becoming south to southeasterly 10 to 15 knots in the early afternoon then tending east to southeasterly in the late evening.
- Seas
- Below 1 metre.
- 1st Swell
- West to southwesterly below 0.5 metres.
- Weather
- Sunny.
- Weather Situation
- A high pressure system centred near Tasmania maintains a broad ridge over most of South Australia, with a trough crossing the Bight. The high centre moves eastward into the Tasman Sea today and Monday while the trough builds over central SA and slowly moves eastward. The trough moves into the northeast of SA on Wednesday while a high passes south of the Bight.
Prime Beach Temperature Statistics View More
December Temperature
Roseworthy (32km)
Lowest 7 December, 2025
4.4 °CAverage December
20.9 °CHighest 18 December, 2025
42.6 °C
Climate (2020–Present)
Roseworthy (32km)
Average Low 2020–2025
9.7 °CAverage 2020–2025
16.2 °CAverage High 2020–2025
23.6 °C