Haystack Island Weather Forecast
- 11
- 17
Cloudy
- 11
- 16
Showers
- 9
- 14
Shower or two
- 9
- 15
Cloudy
- 11
- 16
Shower or two
- 10
- 15
Possible shower
- 10
- 16
Shower or two
Today 21 Jul Yorke Peninsula
Partly cloudy. Winds north to northwesterly 15 to 20 km/h becoming light in the late afternoon then becoming north to northwesterly 15 to 20 km/h in the late evening.
Investigator Strait Coastal Waters
- Wind
- Northwesterly about 10 knots increasing to 10 to 15 knots in the late evening.
- Seas
- Below 1 metre.
- 1st Swell
- West to southwesterly 1 to 1.5 metres.
- Weather
- Cloudy.
- Weather Situation
- A trough crosses South Australia on Tuesday evening, followed by a series of weak cold fronts that cross the south of the State during Wednesday. A ridge of high pressure will build over the west of the State from later Wednesday, with the high centre expected to cross South Australia on Friday and Saturday.
Haystack Island Temperature Statistics View More
July Temperature
Stenhouse Bay (5km)
Lowest 17 July, 2026
4.2 °CAverage July
12.2 °CHighest 18 July, 2026
18.4 °C
Climate (2021–2026)
Stenhouse Bay (5km)
Average Low 2021–2026
13.1 °CAverage 2021–2026
16.1 °CAverage High 2021–2026
20.5 °C