Smith Island Weather Forecast
- 12
- 18
Shower
- 11
- 21
Shower
- 12
- 17
Shower
- 11
- 17
Cloudy
- 12
- 17
Partly cloudy
- 12
- 18
Shower
- 12
- 17
Cloudy
Today 3 Sep Lower Eyre Peninsula
Partly cloudy. High chance of showers, most likely during the morning and afternoon. Winds westerly 15 to 25 km/h becoming light in the late afternoon. Daytime maximum temperatures around 18.
Central Coastal Waters
- Wind
- West to southwesterly 15 to 25 knots, reaching up to 30 knots early in the morning. Winds tending west to northwesterly below 10 knots in the afternoon.
- Seas
- 2 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre during the afternoon.
- 1st Swell
- Southwesterly 4 to 5 metres.
- Weather
- Partly cloudy. 60% chance of showers.
- Weather Situation
- A high pressure ridge will remain over northern parts of SA, as a cold front slips across the southeast early today. The ridge will move to the east early Friday as a trough moves over SA during the day, followed by another cold front early Saturday. Another high pressure system will move across the state, behind the front, and will extend a ridge across central and eastern parts of SA into Sunday. A low pressure system is then expected to develop about the WA border and may extend a trough into far west SA late on Sunday.
Smith Island Temperature Statistics View More
September Temperature
Neptune Island (39km)
Lowest 2 September, 2026
12.6 °CAverage September
14.5 °CHighest 1 September, 2026
17.8 °C
Climate (2021–2026)
Neptune Island (39km)
Average Low 2021–2026
14.3 °CAverage 2021–2026
16.2 °CAverage High 2021–2026
18.8 °C