Nepean Bay Weather Forecast
- 4
- 17
Clear
- 5
- 18
Mostly sunny
- 8
- 15
Showers easing
- 4
- 15
Shower or two
- 6
- 15
Shower or two
- 5
- 15
Partly cloudy
- 3
- 15
Mostly sunny
Today 13 Aug Kangaroo Island
Clear. Light winds.
Investigator Strait Coastal Waters
- Wind
- East to northeasterly about 10 knots.
- Seas
- Below 0.5 metres.
- 1st Swell
- West to southwesterly 1 to 1.5 metres.
- Weather
- Clear.
- Weather Situation
- A high pressure system over SA will move into the Tasman Sea on Thursday head of a cold front. The front will reach the far west of SA late Thursday then move across the remainder of the State during Friday. A trough will move across southern coastal districts late Saturday or early Sunday before a high moves across the south early next week.
Nepean Bay Temperature Statistics View More
August Temperature
Kingscote Airport (7km)
Lowest 9 August, 2025
2.4 °CAverage August
10.9 °CHighest 11 August, 2025
19.1 °C
Climate (2020–Present)
Kingscote Airport (7km)
Average Low 2020–2025
9.2 °CAverage 2020–2025
14.7 °CAverage High 2020–2025
21.1 °C