Williams Island Weather Forecast
- 14
- 15
Partly cloudy
- 14
- 15
Windy
- 13
- 15
Windy
- 13
- 15
Windy
- 14
- 16
Sunny
- 15
- 18
Partly cloudy
- 18
- 18
Shower
Today 7 Sep Lower Eyre Peninsula
Mostly clear. Winds easterly 15 to 20 km/h.
Central Coastal Waters
- Wind
- Easterly 10 to 15 knots.
- Seas
- Below 1 metre.
- 1st Swell
- Southwesterly 2.5 metres.
- Weather
- Partly cloudy.
- Weather Situation
- A high pressure system, centred southwest of WA, extends a ridge across the south of SA. The main high centre will move across waters to the south throughout the week to be centred to the east of SA from late Thursday. A trough over the interior of WA will remain stationary for most of the week and may extend into the far west of the state at times.
Williams Island Temperature Statistics View More
September Temperature
Neptune Island (36km)
Lowest 7 September, 2026
11.6 °CAverage September
14.5 °CHighest 4 September, 2026
18 °C
Climate (2021–2026)
Neptune Island (36km)
Average Low 2021–2026
14.3 °CAverage 2021–2026
16.2 °CAverage High 2021–2026
18.8 °C