Haystack Island Weather Forecast
- 15
- 24
Clear
- 17
- 31
Sunny
- 20
- 37
Sunny
- 19
- 27
Partly cloudy
- 18
- 25
Mostly sunny
- 16
- 22
Cloudy
- 15
- 22
Partly cloudy
Today 5 Jan Yorke Peninsula
Clear. Winds south to southeasterly 25 to 35 km/h.
Investigator Strait Coastal Waters
- Wind
- Southeasterly 15 to 20 knots.
- Seas
- Around 1 metre, increasing to 1 to 1.5 metres through the Backstairs Passage.
- 1st Swell
- West to southwesterly below 1 metre.
- Weather
- Clear.
- Weather Situation
- A high pressure system over the southeast of SA will drift over Victoria on Tuesday before establishing in the Tasman Sea. Meanwhile a broad trough will continue to linger over the far northeast. On Wednesday a new trough will push across the south and settle over the southern pastorals and the east. This trough will be pushed further inland as a southwesterly airstream establishes on Friday with a ridge establishing across the south.
Haystack Island Temperature Statistics View More
January Temperature
Stenhouse Bay (5km)
Lowest 1 January, 2026
14.1 °CAverage January
17.9 °CHighest 2 January, 2026
24 °C
Climate (2021–Present)
Stenhouse Bay (5km)
Average Low 2021–2026
13.1 °CAverage 2021–2026
16 °CAverage High 2021–2026
20.4 °C