Mouth Flat Beach Weather Forecast
- 11
- 20
Partly cloudy
- 15
- 24
Cloudy
- 14
- 21
Shower
- 12
- 19
Rain
- 10
- 15
Partly cloudy
- 9
- 15
Partly cloudy
- 10
- 17
Partly cloudy
Today 28 Sep Kangaroo Island
Partly cloudy. Winds easterly 15 to 25 km/h turning northeasterly 20 to 30 km/h in the late morning and afternoon. Daytime maximum temperatures in the low 20s.
South Central Coastal Waters
- Wind
- Easterly 15 to 20 knots turning northeasterly in the evening.
- Seas
- 1 to 1.5 metres, increasing to 1 to 2 metres west of Kangaroo Island.
- 1st Swell
- Southwesterly 2 metres.
- Weather
- Partly cloudy.
- Weather Situation
- A high pressure system centred west of Tasmania extends a ridge northeastwards over the southeast of the continent. This high and ridge will move eastwards over the Tasman Sea overnight. A series of troughs will then move across from WA during the middle and later part of the week and a couple of cold fronts will move across waters to the south. A high pressure system will become established south of the Bight during Friday.
Mouth Flat Beach Temperature Statistics View More
September Temperature
Cape Willoughby (17km)
Lowest 2 September, 2026
9.9 °CAverage September
14 °CHighest 24 September, 2026
24.8 °C
Climate (2021–2026)
Cape Willoughby (17km)
Average Low 2021–2026
13.4 °CAverage 2021–2026
15.4 °CAverage High 2021–2026
18.5 °C