Mouth Flat Beach Weather Forecast
- 9
- 14
Partly cloudy
- 9
- 16
Partly cloudy
- 10
- 15
Shower
- 8
- 13
Shower
- 9
- 14
Shower
- 9
- 13
Shower
- 8
- 13
Partly cloudy
Today 13 Aug Kangaroo Island
Clear. Light winds.
South Central Coastal Waters
- Wind
- Northerly 10 to 15 knots.
- Seas
- Below 1 metre.
- 1st Swell
- Southwesterly 2 to 2.5 metres.
- Weather
- Mostly clear.
- Weather Situation
- A high pressure system over SA will move into the Tasman Sea on Thursday head of a cold front. The front will reach the far west of SA late Thursday then move across the remainder of the State during Friday. A trough will move across southern coastal districts late Saturday or early Sunday before a high moves across the south early next week.
Mouth Flat Beach Temperature Statistics View More
August Temperature
Cape Willoughby (17km)
Lowest 2 August, 2025
8.6 °CAverage August
12.5 °CHighest 11 August, 2025
17.8 °C
Climate (2020–Present)
Cape Willoughby (17km)
Average Low 2020–2025
13.3 °CAverage 2020–2025
15.4 °CAverage High 2020–2025
18.4 °C