Prime Beach Weather Forecast
- 9
- 17
Partly cloudy
- 5
- 18
Partly cloudy
- 9
- 15
Cloudy
- 5
- 18
Sunny
- 6
- 21
Sunny
- 9
- 24
Partly cloudy
- 15
- 25
Partly cloudy
Today 7 Sep Mid North
Partly cloudy. Winds southeasterly 15 to 20 km/h becoming light in the evening. Daytime maximum temperatures between 16 and 19.
Gulf St Vincent Coastal Waters
- Wind
- South to southeasterly 10 to 15 knots, reaching up to 20 knots north of Port Vincent to Brighton in the late afternoon. Winds tending east to southeasterly below 10 knots in the evening.
- Seas
- Around 1 metre.
- 1st Swell
- South to southwesterly below 0.5 metres.
- Weather
- Partly cloudy.
- Weather Situation
- The tail end of a cold front will move across southern coasts early Monday then a high pressure system centred southwest of WA will extend a ridge across the south of SA. The main high centre will move to the east of SA late Thursday and Friday. A trough over the interior of WA will remain stationary for most of the week.
Prime Beach Temperature Statistics View More
September Temperature
Roseworthy (32km)
Lowest 6 September, 2026
6.2 °CAverage September
12.4 °CHighest 1 September, 2026
20.8 °C
Climate (2021–2026)
Roseworthy (32km)
Average Low 2021–2026
9.9 °CAverage 2021–2026
16.3 °CAverage High 2021–2026
23.7 °C