Althorpe Island Weather Forecast

    • 11
    • 16

    Cloudy

    • 12
    • 17

    Showers easing

    • 10
    • 19

    Showers. Becoming windy

    • 12
    • 17

    Shower or two. Windy

    • 10
    • 18

    Possible shower

    • 11
    • 17

    Possible shower

    • 12
    • 17

    Shower or two

Today 2 Sep Yorke Peninsula

Cloudy. Slight chance of a shower. Light winds becoming westerly 20 to 30 km/h in the morning. Daytime maximum temperatures around 17.

Central Coastal Waters

Wind
Westerly 15 to 20 knots increasing to 20 to 25 knots in the evening.
Seas
Around 1 metre, increasing to 1.5 to 2 metres during the afternoon.
1st Swell
Southwesterly 2 to 3 metres, increasing to 3 to 4 metres in the west around midday.
Weather
Cloudy.
Weather Situation
A high pressure ridge will move across the north of the state on Wednesday and Thursday and a cold front will slip across the southeast of SA early Thursday. The ridge will move eastwards early Friday then another trough will move over SA during the day followed by a cold front early Saturday. Another high pressure ridge will move across during Sunday ahead of a low pressure system expected to develop in the far west later in the day.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Althorpe Island Temperature Statistics View More

September Temperature

Stenhouse Bay (12km)

  • Lowest 1 September, 2026

    10.5 °C

  • Average September

    14.7 °C

  • Highest

    –

Climate (2021–2026)

Stenhouse Bay (12km)

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  • Average Low 2021–2026

    13.2 °C

  • Average 2021–2026

    16.1 °C

  • Average High 2021–2026

    20.5 °C
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