O'Sullivan Beach Weather Forecast
- 13
- 20
Partly cloudy
- 14
- 18
Showers
- 11
- 18
Shower or two
- 12
- 19
Shower or two
- 13
- 19
Shower or two
- 12
- 19
Partly cloudy
- 12
- 19
Shower or two
Today 23 May Adelaide
Cloudy. Winds northeasterly 15 to 20 km/h.
Adelaide Metropolitan Waters
- Wind
- Northeasterly 10 to 15 knots.
- Seas
- Below 0.5 metres.
- 1st Swell
- West to southwesterly below 0.5 metres.
- Weather
- Partly cloudy.
- Weather Situation
- A cold front moving across the Bight will stall over central SA on Sunday as a low pressure system develops near Kangaroo Island. The low is expected to move north over the Eyre Peninsula early next week, weakening as it moves into NSW. A trough may linger near the southern coasts before weak ridge of high pressure begins to move across SA later in the week.
O'Sullivan Beach Temperature Statistics View More
May Temperature
Noarlunga (5km)
Lowest 7 May, 2026
9.1 °CAverage May
16.1 °CHighest 1 May, 2026
28.9 °C
Climate (2021–Present)
Noarlunga (5km)
Average Low 2021–2026
12.8 °CAverage 2021–2026
16.7 °CAverage High 2021–2026
21.9 °C