Haystack Island Weather Forecast
- 14
- 21
Partly cloudy
- 14
- 20
Cloudy
- 13
- 23
Mostly sunny
- 17
- 22
Partly cloudy
- 15
- 20
Partly cloudy
- 14
- 24
Mostly sunny
- 17
- 22
Possible shower
Today 16 Apr Yorke Peninsula
Clear. Winds west to southwesterly 15 to 20 km/h tending south to southwesterly in the late afternoon then becoming light in the evening.
Investigator Strait Coastal Waters
- Wind
- West to southwesterly 10 to 15 knots tending south to southwesterly below 10 knots in the evening.
- Seas
- Below 1 metre.
- 1st Swell
- West to southwesterly around 1 metre.
- Weather
- Mostly clear.
- Weather Situation
- A high pressure system south of the Bight extends a ridge over SA. The high will move east during Friday and Saturday ahead of a weakening trough that is expected to brush the west and south on the weekend. The high is forecast to be over the Tasman Sea by Monday, extending a ridge over South Australia through until Tuesday.
Haystack Island Temperature Statistics View More
April Temperature
Cape Borda (55km)
Lowest 8 April, 2026
9.4 °CAverage April
15.4 °CHighest 4 April, 2026
22.2 °C
Climate (2021–Present)
Cape Borda (55km)
Average Low 2021–2026
11.7 °CAverage 2021–2026
14.9 °CAverage High 2021–2026
18.9 °C