Mouth Flat Beach Weather Forecast
- 8
- 15
Cloudy
- 9
- 16
Partly cloudy
- 9
- 17
Partly cloudy
- 9
- 16
Partly cloudy
- 10
- 15
Partly cloudy
- 9
- 17
Partly cloudy
- 12
- 18
Shower
Today 26 Aug Kangaroo Island
Partly cloudy. Light winds. Daytime maximum temperatures around 16.
South Central Coastal Waters
- Wind
- Variable about 10 knots becoming west to northwesterly 10 to 15 knots in the middle of the day then tending north to northwesterly in the late afternoon.
- Seas
- Below 1 metre.
- 1st Swell
- Southwesterly 2 to 3 metres.
- Weather
- Cloudy.
- Weather Situation
- A high pressure system is centred over central SA, the high will continue moving to the east while extending a ridge over SA on Thursday. A low pressure trough is then forecast to approach and linger about western parts late on Thursday until early Saturday. Another high then moves across waters to the south, extending a ridge across much of the state over the weekend.
Mouth Flat Beach Temperature Statistics View More
August Temperature
Cape Willoughby (17km)
Lowest 4 August, 2026
8.9 °CAverage August
12.7 °CHighest 7 August, 2026
17.4 °C
Climate (2021–2026)
Cape Willoughby (17km)
Average Low 2021–2026
13.3 °CAverage 2021–2026
15.4 °CAverage High 2021–2026
18.5 °C