Williams Island Weather Forecast
- 16
- 17
Cloudy
- 17
- 17
Cloudy
- 16
- 18
Cloudy
- 16
- 18
Sunny
- 17
- 19
Partly cloudy
- 17
- 18
Partly cloudy
- 17
- 20
Partly cloudy
Today 12 Apr Lower Eyre Peninsula
Cloudy. Winds southwesterly 15 to 25 km/h becoming light in the evening.
Central Coastal Waters
- Wind
- Southwesterly 10 to 15 knots, reaching up to 20 knots inshore in the late afternoon. Winds decreasing to about 10 knots in the late evening.
- Seas
- Around 1 metre.
- 1st Swell
- Southerly 4 metres.
- Weather
- Cloudy.
- Weather Situation
- A high pressure system south of the Bight will move slowly northeast this week allowing a series of fronts to pass over the southeast on Wednesday and Thursday. A second high pressure system is expected to follow and become established well south of the Bight by Friday.
Williams Island Temperature Statistics View More
April Temperature
Neptune Island (36km)
Lowest 11 April, 2026
12.4 °CAverage April
17.3 °CHighest 1 April, 2026
21.6 °C
Climate (2021–Present)
Neptune Island (36km)
Average Low 2021–2026
14.3 °CAverage 2021–2026
16.2 °CAverage High 2021–2026
18.8 °C