Haystack Island Weather Forecast
- 13
- 18
Possible shower
- 14
- 19
Cloudy
- 14
- 20
Partly cloudy
- 14
- 20
Partly cloudy
- 14
- 21
Partly cloudy
- 15
- 21
Partly cloudy
- 14
- 19
Partly cloudy
Today 11 Apr Yorke Peninsula
Cloudy. Medium chance of showers, becoming less likely late this afternoon and evening. Winds southwesterly 25 to 40 km/h. Daytime maximum temperatures around 19.
Investigator Strait Coastal Waters
- Wind
- Southwesterly 15 to 25 knots.
- Seas
- 1 to 1.5 metres, increasing to 1.5 to 2 metres around midday.
- 1st Swell
- West to southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres around midday.
- Weather
- Cloudy.
- Weather Situation
- A high pressure system south of WA extends a ridge over South Australia. This ridge will persist over SA this weekend as the high moves slowly east to be south of the Bight by tomorrow night. The high is forecast to weaken and step back to the west early next week allowing a trough to pass over the southeast Tuesday night.
Haystack Island Temperature Statistics View More
April Temperature
Stenhouse Bay (5km)
Lowest 8 April, 2026
11.3 °CAverage April
17.4 °CHighest 6 April, 2026
25.2 °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