Haystack Island Weather Forecast

    • 12
    • 17

    Windy. Cloudy

    • 11
    • 17

    Shower or two. Windy

    • 12
    • 23

    Partly cloudy

    • 17
    • 26

    Partly cloudy

    • 13
    • 19

    Showers easing

    • 12
    • 19

    Shower or two

    • 11
    • 17

    Partly cloudy

Today 26 Sep Yorke Peninsula

Cloudy. Slight chance of a shower in the south, near zero chance elsewhere. Winds southeasterly 25 to 35 km/h.

Investigator Strait Coastal Waters

Wind
Southeasterly 20 to 30 knots.
Seas
1.5 to 2 metres.
1st Swell
West to southwesterly around 1 metre, increasing to 1 to 1.5 metres inshore.
Weather
Cloudy.
Weather Situation
A trough over central Australia will weaken and contract into WA as a ridge of high pressure extends across southern SA on Sunday. The high pressure system is expected to drift into the Tasman Sea by Tuesday as the trough in WA begins to re-extend over western SA on Tuesday, pushing into the state on Wednesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Haystack Island Temperature Statistics View More

September Temperature

Stenhouse Bay (5km)

  • Lowest 17 September, 2026

    6.7 °C

  • Average September

    14.6 °C

  • Highest 24 September, 2026

    28.3 °C

Climate (2021–2026)

Stenhouse Bay (5km)

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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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