American Beach Weather Forecast

    • 14
    • 20

    Partly cloudy

    • 12
    • 19

    Cloudy

    • 12
    • 18

    Cloudy

    • 12
    • 21

    Partly cloudy

    • 13
    • 34

    Sunny

    • 17
    • 34

    Sunny

    • 16
    • 25

    Partly cloudy

Today 13 Dec Kangaroo Island

Mostly sunny. Winds southerly 20 to 30 km/h turning southwesterly in the afternoon. Daytime maximum temperatures in the low to mid 20s.

Investigator Strait Coastal Waters

Wind
Southerly 10 to 15 knots increasing to 25 knots before turning southwesterly 15 to 20 knots in the afternoon.
Seas
1 to 1.5 metres.
1st Swell
West to southwesterly below 1 metre.
Weather
Mostly sunny.
Weather Situation
A slow moving broad high pressure system in the Indian Ocean will build a ridge across coastal waters on today and establish itself south of the Bight on Sunday and Monday. The high is forecast to move east into the Tasman Sea on Tuesday while maintaining a ridge over coastal waters.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

American Beach Temperature Statistics View More

December Temperature

Cape Willoughby (24km)

  • Lowest 2 December, 2025

    10.7 °C

  • Average December

    17.1 °C

  • Highest 3 December, 2025

    27.7 °C

Climate (2020–Present)

Cape Willoughby (24km)

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  • Average Low 2020–2025

    13.3 °C

  • Average 2020–2025

    15.3 °C

  • Average High 2020–2025

    18.4 °C
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