Mouth Flat Beach Weather Forecast
- 16
- 37
Clear
- 22
- 34
Partly cloudy
- 17
- 23
Windy
- 17
- 24
Windy
- 17
- 27
Partly cloudy
- 17
- 22
Windy
- 15
- 20
Windy
Today 26 Jan Kangaroo Island
Clear. Winds east to southeasterly 15 to 25 km/h.
South Central Coastal Waters
- Wind
- Easterly 10 to 15 knots, reaching up to 20 knots west of Kangaroo Island in the evening.
- Seas
- Around 1 metre.
- 1st Swell
- Southwesterly 1.5 to 2 metres.
- Weather
- Clear.
- Weather Situation
- A high pressure system over waters to the south moves eastwards over the Tasman Sea later today, directing a northerly airstream over SA. A low pressure trough enters the west of the State and is expected to move across the south on Tuesday. A secondary high pressure system moves into waters south of the Bight on Wednesday, tracking eastwards to reach the Tasman Sea on Thursday, maintaining a ridge over southern SA into Friday as another high pressure ridge extends in from the west.
Mouth Flat Beach Temperature Statistics View More
January Temperature
Cape Willoughby (17km)
Lowest 1 January, 2026
13.7 °CAverage January
18.2 °CHighest 24 January, 2026
36.6 °C
Climate (2021–Present)
Cape Willoughby (17km)
Average Low 2021–2026
13.3 °CAverage 2021–2026
15.4 °CAverage High 2021–2026
18.4 °C