Mouth Flat Beach Weather Forecast
- 11
- 15
Shower
- 8
- 15
Cloudy
- 8
- 16
Partly cloudy
- 11
- 17
Partly cloudy
- 11
- 17
Partly cloudy
- 10
- 16
Partly cloudy
- 9
- 17
Sunny
Today 25 Aug Kangaroo Island
Partly cloudy. Medium chance of showers this morning. Winds southerly 25 to 35 km/h turning southwesterly 15 to 25 km/h in the late afternoon. Daytime maximum temperatures around 15.
South Central Coastal Waters
- Wind
- Southerly 20 to 25 knots, reaching up to 30 knots early in the morning. Winds turning southwesterly 15 to 20 knots in the late morning.
- Seas
- 1.5 to 2 metres, decreasing to 1 to 1.5 metres by early evening.
- 1st Swell
- Southwesterly 2 to 3 metres.
- Weather
- Partly cloudy. 95% chance of showers inshore, 50% chance elsewhere.
- Weather Situation
- A low pressure system and associated trough continue moving over southern SA today and will move into the eastern states this evening. A high pressure system will move in from the west to be over SA on Wednesday. Another trough approaches the southwest during Thursday evening, and may linger about the western parts of SA before another high moves across the south over the weekend.
Mouth Flat Beach Temperature Statistics View More
August Temperature
Cape Willoughby (17km)
Lowest 4 August, 2026
8.9 °CAverage August
12.6 °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