Haystack Island Weather Forecast
- 9
- 16
Shower or two. Windy
- 11
- 15
Cloudy
- 9
- 15
Cloudy
- 8
- 16
Partly cloudy
- 10
- 17
Sunny
- 9
- 18
Showers increasing
- 11
- 18
Showers. Becoming windy
Today 2 Aug Yorke Peninsula
Partly cloudy. Medium chance of showers, becoming less likely later this evening. Winds westerly 20 to 30 km/h.
Investigator Strait Coastal Waters
- Wind
- Westerly 20 to 25 knots, reaching up to 30 knots in the late afternoon.
- Seas
- 1.5 to 2 metres.
- 1st Swell
- West to southwesterly around 1 metre, increasing to 1 to 1.5 metres by early evening.
- Weather
- Partly cloudy. 80% chance of showers.
- Weather Situation
- A cold front slips across the southeast of the state overnight into Monday, as a high pressure system moves into the Bight, behind the front. The high is forecast to extend a ridge throughout the state as it moves east during the week, likely being centred over NSW towards the end of the week.
Haystack Island Temperature Statistics View More
August Temperature
Stenhouse Bay (5km)
Lowest 1 August, 2026
4.5 °CAverage August
7.8 °CHighest
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Climate (2021–2026)
Stenhouse Bay (5km)
Average Low 2021–2026
13.1 °CAverage 2021–2026
16.1 °CAverage High 2021–2026
20.5 °C