Althorpe Island Weather Forecast

    • 15
    • 21

    Cloudy

    • 10
    • 15

    Cloudy

    • 10
    • 18

    Mostly sunny

    • 11
    • 21

    Sunny

    • 14
    • 23

    Partly cloudy

    • 14
    • 21

    Possible shower

    • 13
    • 19

    Possible shower

Today 20 Sep Yorke Peninsula

Partly cloudy. Slight chance of a shower, most likely later this evening. Winds southwesterly 25 to 40 km/h decreasing to 15 to 25 km/h in the late evening.

Central Coastal Waters

Wind
West to southwesterly 15 to 20 knots, reaching up to 25 knots in the west in the late afternoon. Winds tending south to southwesterly in the evening.
Seas
1.5 to 2 metres.
1st Swell
Southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres by early evening.
Weather
Cloudy.
Weather Situation
A trough and cold front will move to the east of SA later Sunday. A high pressure system will move eastwards across waters to the south during Monday then over Victoria and the Tasman Sea on Tuesday. This high will extend a ridge westwards over SA ahead of a low pressure trough that is expected to move over the far west of SA during Wednesday. The trough will slip southeastwards over the Bight during Thursday.
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 17 September, 2026

    6.7 °C

  • Average September

    14.1 °C

  • Highest 12 September, 2026

    25.2 °C

Climate (2021–2026)

Stenhouse Bay (12km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    13.2 °C

  • Average 2021–2026

    16.1 °C

  • Average High 2021–2026

    20.5 °C
Get WillyWeather+ to remove ads