Haystack Island Weather Forecast
- 14
- 20
Cloudy
- 13
- 23
Mostly sunny
- 17
- 22
Partly cloudy
- 15
- 20
Partly cloudy
- 14
- 24
Mostly sunny
- 17
- 22
Possible shower
- 15
- 22
Mostly sunny
Today 17 Apr Yorke Peninsula
Partly cloudy. The chance of fog in the north early this morning. Winds south to southeasterly 15 to 25 km/h tending east to southeasterly 15 to 20 km/h during the afternoon and evening. Daytime maximum temperatures in the low to mid 20s.
Investigator Strait Coastal Waters
- Wind
- Southerly 10 to 15 knots turning east to southeasterly in the late morning and early afternoon.
- Seas
- Around 1 metre.
- 1st Swell
- West to southwesterly 1 to 1.5 metres, decreasing to around 1 metre later in the evening.
- Weather
- Cloudy.
- Weather Situation
- A high pressure system south of the Bight extends a ridge over SA. The high will move east during today 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
15.5 °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