Haystack Island Weather Forecast
- 14
- 24
Showers. Becoming windy
- 13
- 19
Showers. Windy
- 13
- 19
Showers easing. Wind easing
- 13
- 19
Cloudy
- 13
- 19
Showers. Becoming windy
- 10
- 16
Possible shower. Wind easing
- 12
- 19
Shower or two
Today 2 May Yorke Peninsula
Partly cloudy. Very high chance of showers, becoming less likely late this afternoon and evening. The chance of a thunderstorm during the morning and afternoon. Winds north to northeasterly 25 to 30 km/h turning northwesterly 25 to 40 km/h during the morning. Daytime maximum temperatures in the mid 20s.
Investigator Strait Coastal Waters
- Wind
- Northerly 15 to 25 knots turning northwesterly 20 to 25 knots in the morning. Winds reaching up to 30 knots during the day.
- Seas
- 1.5 to 2.5 metres.
- 1st Swell
- West to southwesterly around 1 metre, increasing to 1.5 to 2.5 metres during the afternoon.
- Weather
- Cloudy. 95% chance of showers. The chance of a thunderstorm during the morning and afternoon.
- Weather Situation
- A strong high pressure system over the Tasman Sea extends northerly winds over SA. Winds will freshen ahead of a front that is forecast to move across the far west today then continue across the state during the weekend. The low pressure system associated with this front is expected to linger over waters to the south of the state and extend a trough over southern parts later Sunday and Monday. The low will then move over Bass Strait later Monday. A ridge will extend across SA from the west on Tuesday and a cold front will move across the south later Wednesday.
Haystack Island Temperature Statistics View More
May Temperature
Stenhouse Bay (5km)
Lowest 1 May, 2026
18.4 °CAverage May
20.8 °CHighest
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Climate (2021–Present)
Stenhouse Bay (5km)
Average Low 2021–2026
13.1 °CAverage 2021–2026
16.1 °CAverage High 2021–2026
20.5 °C