Mouth Flat Beach Weather Forecast
- 14
- 19
Partly cloudy
- 14
- 21
Partly cloudy
- 15
- 21
Partly cloudy
- 15
- 22
Windy
- 15
- 20
Shower
- 15
- 21
Windy
- 16
- 26
Partly cloudy
Today 11 Jan Kangaroo Island
Partly cloudy. Winds southeasterly 20 to 30 km/h.
South Central Coastal Waters
- Wind
- Southeasterly 15 to 20 knots, reaching up to 25 knots inshore.
- Seas
- 1 to 1.5 metres, increasing to 1.5 to 2 metres inshore.
- 1st Swell
- Southwesterly 1.5 to 2 metres.
- Weather
- Cloudy.
- Weather Situation
- A high pressure ridge south of the state will persist over the coming days with multiple weak high pressure centres moving to the south. A low pressure trough will move west of the state late on Tuesday. This trough will be pushed northwards along the WA border as new high pressure system develops south of the Bight on Wednesday. This high will remain relatively stationary to the south on Thursday as it extends a weak ridge over the state.
Mouth Flat Beach Temperature Statistics View More
January Temperature
Cape Willoughby (17km)
Lowest 1 January, 2026
13.7 °CAverage January
18.7 °CHighest 7 January, 2026
36.5 °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