Haystack Island Weather Forecast
- 15
- 21
Mostly clear
- 13
- 21
Mostly sunny
- 14
- 23
Mostly sunny
- 15
- 25
Partly cloudy
- 18
- 25
Partly cloudy
- 18
- 25
Possible shower
- 17
- 23
Showers
Today 26 Apr Yorke Peninsula
Clear. Winds southeasterly 15 to 20 km/h.
Investigator Strait Coastal Waters
- Wind
- South to southeasterly about 10 knots.
- Seas
- Below 1 metre.
- 1st Swell
- West to southwesterly 1 to 1.5 metres.
- Weather
- Mostly clear.
- Weather Situation
- A high pressure system south of the Bight will drift east on Monday to merge with the strong high in the Tasman Sea. The strong high will extend a ridge across South Australia through to Friday.
Haystack Island Temperature Statistics View More
April Temperature
Stenhouse Bay (5km)
Lowest 8 April, 2026
11.3 °CAverage April
17.6 °CHighest 21 April, 2026
30.6 °C
Climate (2021–Present)
Stenhouse Bay (5km)
Average Low 2021–2026
13.1 °CAverage 2021–2026
16.1 °CAverage High 2021–2026
20.5 °C