Haystack Island Weather Forecast

    • 9
    • 18

    Mostly sunny

    • 11
    • 18

    Mostly sunny

    • 11
    • 18

    Cloud clearing

    • 10
    • 16

    Sunny

    • 9
    • 18

    Sunny

    • 12
    • 19

    Shower or two

    • 11
    • 17

    Partly cloudy

Today 27 Aug Yorke Peninsula

Sunny. Light winds becoming northerly 15 to 25 km/h in the morning then becoming light in the late afternoon. Overnight temperatures falling to between 4 and 8 with daytime temperatures reaching around 18.

Investigator Strait Coastal Waters

Wind
Northerly 10 to 15 knots.
Seas
Below 1 metre.
1st Swell
West to southwesterly around 1 metre, increasing to 1 to 1.5 metres during the morning, then tending westerly 1 to 2 metres around midday.
Weather
Mostly sunny.
Weather Situation
A high pressure ridge over central SA will move slowly eastwards during today. A low pressure trough over WA is expected to extend over the far west of SA late Thursday and Friday. A high pressure system will move across waters to the south over the weekend to be centred over southern Victoria late Sunday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Haystack Island Temperature Statistics View More

August Temperature

Stenhouse Bay (5km)

  • Lowest 1 August, 2026

    4.5 °C

  • Average August

    12.8 °C

  • Highest 18 August, 2026

    19.9 °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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