American Beach Weather Forecast
- 10
- 20
Partly cloudy
- 10
- 18
Shower
- 9
- 16
Shower
- 11
- 17
Shower
- 10
- 15
Cloudy
- 9
- 17
Cloudy
- 9
- 17
Cloudy
Today 18 Sep Kangaroo Island
Mostly sunny. Winds northerly 15 to 25 km/h increasing to 25 to 35 km/h in the morning then turning west to northwesterly 15 to 25 km/h in the early afternoon. Daytime maximum temperatures between 19 and 22.
Investigator Strait Coastal Waters
- Wind
- Northerly 15 to 20 knots turning west to northwesterly 10 to 15 knots in the late afternoon.
- Seas
- 1 to 1.5 metres, decreasing below 1 metre later in the evening.
- 1st Swell
- West to southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres by early evening.
- Weather
- Mostly sunny.
- Weather Situation
- A high pressure system lies over the Tasman Sea with a ridge extending into the east of the state. A weak trough over South Australian waters will continue moving through eastern waters tonight. A cold front will pass over the south during Friday afternoon with a southwesterly flow persisting through the weekend as a ridge of high pressure extends over northern parts of the state.
American Beach Temperature Statistics View More
September Temperature
Cape Willoughby (24km)
Lowest 17 September, 2025
7 °CAverage September
13.3 °CHighest 6 September, 2025
23.9 °C
Climate (2020–Present)
Cape Willoughby (24km)
Average Low 2020–2025
13.3 °CAverage 2020–2025
15.4 °CAverage High 2020–2025
18.4 °C