Mouth Flat Beach Weather Forecast
- 14
- 20
Cloudy
- 13
- 24
Partly cloudy
- 14
- 33
Sunny
- 19
- 37
Sunny
- 18
- 29
Partly cloudy
- 16
- 28
Partly cloudy
- 16
- 21
Shower
Today 4 Jan Kangaroo Island
Partly cloudy. Winds south to southeasterly 25 to 35 km/h. Daytime maximum temperatures in the low to mid 20s.
South Central Coastal Waters
- Wind
- Southeasterly 15 to 20 knots.
- Seas
- 1 to 1.5 metres, decreasing to 1 metre around midday, then increasing to 1 to 1.5 metres by early evening.
- 1st Swell
- Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres during the morning.
- Weather
- Cloudy.
- Weather Situation
- A high pressure system centred south of SA extends a ridge over most of the state and a broad trough lingers over the far northeast. These features will remain relatively stationary over the weekend then the high will move eastwards early next week. A broad trough will move across from the west mid next week.
Mouth Flat Beach Temperature Statistics View More
January Temperature
Cape Willoughby (17km)
Lowest 1 January, 2026
13.7 °CAverage January
16.1 °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