Prime Beach Weather Forecast
- 15
- 36
Sunny
- 18
- 40
Sunny
- 20
- 33
Partly cloudy
- 15
- 27
Partly cloudy
- 16
- 24
Shower
- 13
- 23
Partly cloudy
- 13
- 23
Partly cloudy
Today 17 Dec Mid North
Sunny. Winds northwest to northeasterly 15 to 20 km/h tending west to southwesterly in the late afternoon then becoming light in the late evening. 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 becoming east to southeasterly about 10 knots 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 drifts into the Tasman Sea today. A trough of low pressure will briefly enter the far northeast of SA with another trough slowly moving across the south and west on Thursday. In the wake of the trough a south to southwesterly flow will establish across the coasts on Friday, continuing into Saturday.
Prime Beach Temperature Statistics View More
December Temperature
Roseworthy (32km)
Lowest 7 December, 2025
4.4 °CAverage December
20.4 °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