Haystack Island Weather Forecast
- 23
- 39
Wind easing. Partly cloudy
- 17
- 26
Mostly sunny
- 18
- 35
Sunny
- 23
- 31
Mostly sunny
- 19
- 25
Becoming windy. Mostly sunny
- 17
- 25
Partly cloudy
- 18
- 27
Mostly sunny
Today 24 Jan Yorke Peninsula
Mostly sunny. Winds north to northwesterly 35 to 55 km/h shifting south to southeasterly 25 to 35 km/h in the evening. Daytime maximum temperatures in the low to mid 40s.
Investigator Strait Coastal Waters
- Wind
- Northerly 15 to 25 knots, reaching up to 30 knots in the late morning and afternoon. Winds shifting southerly in the early afternoon.
- Seas
- 1 to 1.5 metres, increasing to 1 to 2 metres by early evening.
- 1st Swell
- West to southwesterly below 1 metre.
- Weather
- Partly cloudy.
- Weather Situation
- A trough is forecast to move over southern SA today, and linger through inland parts of SA into Sunday. Another high pressure system is expected to move over waters to the south over the weekend, extending a ridge over southern SA on Sunday, before a second trough moves into the west on Monday and across the south on Tuesday.
Haystack Island Temperature Statistics View More
January Temperature
Stenhouse Bay (5km)
Lowest 1 January, 2026
14.1 °CAverage January
19.5 °CHighest 7 January, 2026
41.1 °C
Climate (2021–Present)
Stenhouse Bay (5km)
Average Low 2021–2026
13.1 °CAverage 2021–2026
16 °CAverage High 2021–2026
20.4 °C