Mouth Flat Beach Weather Forecast
- 14
- 24
Clear
- 14
- 35
Sunny
- 19
- 38
Sunny
- 18
- 26
Partly cloudy
- 16
- 28
Partly cloudy
- 15
- 20
Cloudy
- 14
- 20
Cloudy
Today 5 Jan Kangaroo Island
Clear. Winds southeasterly 15 to 25 km/h.
South Central Coastal Waters
- Wind
- Southeasterly about 10 knots increasing to 10 to 15 knots in the late afternoon.
- Seas
- Below 1 metre.
- 1st Swell
- Southwesterly 1.5 metres.
- Weather
- Clear.
- Weather Situation
- A high pressure system over the southeast of SA will drift over Victoria on Tuesday before establishing in the Tasman Sea. Meanwhile a broad trough will continue to linger over the far northeast. On Wednesday a new trough will push across the south and settle over the southern pastorals and the east. This trough will be pushed further inland as a southwesterly airstream establishes on Friday with a ridge establishing across the south.
Mouth Flat Beach Temperature Statistics View More
January Temperature
Cape Willoughby (17km)
Lowest 1 January, 2026
13.7 °CAverage January
16.2 °CHighest 2 January, 2026
20.1 °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