Williams Island Weather Forecast
- 14
- 16
Clear
- 16
- 18
Shower
- 14
- 15
Shower
- 14
- 16
Shower
- 14
- 18
Shower
- 15
- 15
Shower
- 14
- 15
Shower
Today 31 Aug Lower Eyre Peninsula
Clear. Light winds becoming northerly 15 to 20 km/h in the late evening.
Central Coastal Waters
- Wind
- North to northeasterly 10 to 15 knots.
- Seas
- Below 1 metre.
- 1st Swell
- Southwesterly 3 metres.
- Weather
- Clear.
- Weather Situation
- A high pressure system centred over eastern NSW extends a ridge over SA. The ridge will weaken and the high will move eastwards on Tuesday and a cold front is expected to move across SA. Another high pressure ridge will move across the north of the state on Wednesday and Thursday and another cold front will slip across the southeast of SA early Thursday. The ridge will move eastwards early Friday then another trough and cold front will move over SA during the day.
Williams Island Temperature Statistics View More
August Temperature
Neptune Island (36km)
Lowest 4 August, 2026
10.4 °CAverage August
14 °CHighest 27 August, 2026
18.3 °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