Haystack Island Weather Forecast

    • 13
    • 21

    Partly cloudy

    • 14
    • 22

    Mostly sunny

    • 14
    • 23

    Mostly sunny

    • 15
    • 22

    Showers

    • 15
    • 21

    Showers easing

    • 14
    • 20

    Shower or two

    • 13
    • 20

    Shower or two

Today 12 May Yorke Peninsula

Partly cloudy. Winds easterly 15 to 20 km/h becoming light in the middle of the day then becoming east to southeasterly 15 to 20 km/h in the late afternoon. Daytime maximum temperatures in the low to mid 20s.

Investigator Strait Coastal Waters

Wind
East to southeasterly about 10 knots increasing to 10 to 15 knots in the evening.
Seas
Below 1 metre.
1st Swell
West to southwesterly below 1 metre, increasing to around 1 metre through the Backstairs Passage.
Weather
Partly cloudy.
Weather Situation
A strong high pressure system near Tasmania is slowly moving east, reaching the Tasman Sea by tomorrow. A trough of low pressure moves into the far west late on Friday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Haystack Island Temperature Statistics View More

May Temperature

Stenhouse Bay (5km)

  • Lowest 3 May, 2026

    11.4 °C

  • Average May

    16 °C

  • Highest 1 May, 2026

    28.9 °C

Climate (2021–Present)

Stenhouse Bay (5km)

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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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