American River Weather Forecast

    • 9
    • 17

    Sunny

    • 11
    • 19

    Mostly sunny

    • 14
    • 20

    Showers easing

    • 11
    • 18

    Cloudy

    • 11
    • 15

    Cloudy

    • 10
    • 15

    Cloudy

    • 8
    • 18

    Sunny

Today 11 Sep Kangaroo Island

The chance of morning fog. Mostly sunny afternoon. Winds easterly 15 to 20 km/h tending northeasterly in the morning then becoming light in the early afternoon. Daytime maximum temperatures around 18.

Investigator Strait Coastal Waters

Wind
Easterly 10 to 15 knots decreasing to about 10 knots in the middle of the day.
Seas
Below 1 metre.
1st Swell
West to southwesterly below 1 metre, increasing to 1 to 2 metres through the Backstairs Passage.
Weather
Mostly sunny.
Weather Situation
A high pressure system centred south of the Bight extends a ridge across the south of SA. The main high centre will gradually move eastwards to be centred to the east of SA later on Friday. A trough over the interior of WA will remain stationary but will weaken later Friday. Another low pressure trough will approach from the west on Saturday and move across SA on Sunday then a cold front will move across southern coasts later Monday. An upper disturbance will move over the far west on Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

American River Temperature Statistics View More

September Temperature

Kingscote Airport (24km)

  • Lowest 8 September, 2026

    1.9 °C

  • Average September

    12.3 °C

  • Highest 1 September, 2026

    21.3 °C

Climate (2021–2026)

Kingscote Airport (24km)

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  • Average Low 2021–2026

    9.3 °C

  • Average 2021–2026

    14.8 °C

  • Average High 2021–2026

    21.1 °C
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