Althorpe Island Weather Forecast

    • 11
    • 17

    Cloudy

    • 11
    • 16

    Showers

    • 9
    • 14

    Shower or two

    • 9
    • 15

    Cloudy

    • 11
    • 16

    Shower or two

    • 10
    • 15

    Possible shower

    • 10
    • 16

    Shower or two

Today 21 Jul Yorke Peninsula

Partly cloudy. Winds north to northwesterly 15 to 20 km/h becoming light in the late afternoon then becoming north to northwesterly 15 to 20 km/h in the late evening. Daytime maximum temperatures around 17.

Central Coastal Waters

Wind
North to northwesterly 10 to 15 knots turning west to southwesterly during the afternoon and evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 to 2.5 metres.
Weather
Cloudy. 70% chance of showers.
Weather Situation
A high pressure system over the Tasman Sea extends a ridge over South Australia, with the ridge expected to weaken during Tuesday. A trough will develop in the west on Tuesday, ahead of a weak cold front that is expected to extend over southern parts during Wednesday. Another ridge will extend over the west of the state later Wednesday, with a high centre expected to build over the Bight Thursday and Friday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Althorpe Island Temperature Statistics View More

July Temperature

Stenhouse Bay (12km)

  • Lowest 17 July, 2026

    4.2 °C

  • Average July

    12.2 °C

  • Highest 18 July, 2026

    18.4 °C

Climate (2021–2026)

Stenhouse Bay (12km)

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  • Average Low 2021–2026

    13.1 °C

  • Average 2021–2026

    16.1 °C

  • Average High 2021–2026

    20.5 °C
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