American Beach Weather Forecast

    • 13
    • 19

    Shower

    • 13
    • 22

    Sunny

    • 15
    • 31

    Partly cloudy

    • 14
    • 20

    Cloudy

    • 12
    • 21

    Cloudy

    • 13
    • 19

    Cloudy

    • 12
    • 21

    Partly cloudy

Today 10 Dec Kangaroo Island

Partly cloudy. High chance of showers in the morning and early afternoon. Winds southeasterly 20 to 30 km/h. Daytime maximum temperatures between 19 and 23.

Investigator Strait Coastal Waters

Wind
Southeasterly 15 to 25 knots.
Seas
1 to 2 metres.
1st Swell
West to southwesterly around 1 metre.
Weather
Partly cloudy. 60% chance of showers in the morning and early afternoon.
Weather Situation
A high pressure system over the Bight extends a ridge of high pressure over most of the state and will persist over southern SA during today and Thursday. Meanwhile, a trough of low pressure over the far northwest is expected to move along the northern border today. The trough will extend further south on Thursday then move eastwards across the west and south of SA on Friday. Another ridge of high pressure will move over the south over the weekend and the trough will move slowly northeastwards.
Graph Plots Open in Graphs

  • 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 °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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