Prime Beach Weather Forecast
- 15
- 31
Cloudy
- 15
- 32
Partly cloudy
- 19
- 36
Partly cloudy
- 17
- 24
Partly cloudy
- 12
- 24
Partly cloudy
- 13
- 23
Cloudy
- 10
- 28
Sunny
Today 10 Dec Mid North
Partly cloudy. Winds east to southeasterly 20 to 30 km/h. Daytime maximum temperatures 29 to 35.
Gulf St Vincent Coastal Waters
- Wind
- South to southeasterly 15 to 20 knots.
- Seas
- 1 to 1.5 metres, decreasing to 1 metre during the afternoon, then increasing to 1 to 1.5 metres by early evening.
- 1st Swell
- West to southwesterly below 0.5 metres.
- Weather
- Partly cloudy.
- Weather Situation
- A high pressure system over the Bight extends a ridge of high pressure over most of the state and will persist over southern SA during today and Thursday. Meanwhile, a trough of low pressure over the far northwest is expected to move along the northern border today. The trough will extend further south on Thursday then move eastwards across the west and south of SA on Friday. Another ridge of high pressure will move over the south over the weekend and the trough will move slowly northeastwards.
Prime Beach Temperature Statistics View More
December Temperature
Roseworthy (32km)
Lowest 7 December, 2025
4.4 °CAverage December
19.3 °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