Althorpe Island Weather Forecast

    • 17
    • 26

    Sunny

    • 17
    • 28

    Partly cloudy

    • 20
    • 24

    Showers clearing

    • 16
    • 22

    Cloud clearing

    • 17
    • 25

    Partly cloudy

    • 17
    • 24

    Windy. Partly cloudy

    • 17
    • 25

    Wind easing. Partly cloudy

Today 20 Feb Yorke Peninsula

Mostly sunny. Winds northwest to northeasterly 15 to 20 km/h tending northwest to southwesterly 20 to 30 km/h in the middle of the day then tending south to southeasterly in the late afternoon. Daytime maximum temperatures in the low to mid 30s.

Central Coastal Waters

Wind
Southerly 15 to 20 knots tending southeasterly 10 to 15 knots in the late evening.
Seas
Below 0.5 metres, increasing to around 1 metre during the afternoon.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Partly cloudy.
Weather Situation
A ridge of high pressure across the south of SA will weaken during Saturday as the high pressure centre moves into the Tasman Sea. A broad trough of low pressure lies over the north and will move south today and Saturday. The trough will move eastwards during Sunday as a cold front moves across the south. A broad area of low pressure will persist across the north early next week as a new high pressure ridge becomes established over waters to the south.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Althorpe Island Temperature Statistics View More

February Temperature

Stenhouse Bay (12km)

  • Lowest 12 February, 2026

    15.2 °C

  • Average February

    20 °C

  • Highest 16 February, 2026

    37.7 °C

Climate (2021–Present)

Stenhouse Bay (12km)

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  • Average Low 2021–2026

    13.1 °C

  • Average 2021–2026

    16 °C

  • Average High 2021–2026

    20.5 °C
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