Smith Island Weather Forecast
- 15
- 22
Windy
- 13
- 21
Cloudy
- 14
- 20
Cloudy
- 13
- 21
Cloudy
- 14
- 22
Cloudy
- 14
- 23
Partly cloudy
- 15
- 30
Sunny
Today 21 Dec Lower Eyre Peninsula
Partly cloudy. Slight chance of a shower near the west coast, near zero chance elsewhere. Winds west to southwesterly 30 to 45 km/h tending south to southwesterly 25 to 40 km/h in the middle of the day. Daytime maximum temperatures in the low to mid 20s.
Central Coastal Waters
- Wind
- West to southwesterly 20 to 25 knots, reaching up to 30 knots in the late morning. Winds turning southerly 15 to 25 knots in the late morning.
- Seas
- 1.5 to 2.5 metres, decreasing below 1.5 metres later in the evening.
- 1st Swell
- Westerly 1.5 to 2.5 metres.
- Weather
- Partly cloudy. The chance of a thunderstorm inshore in the late morning and early afternoon.
- Weather Situation
- A broad trough of low pressure lingers over the east and northern parts of the State. A low pressure system lies south of the bight and moves east to combine with the trough early Sunday. The combined low pressure system and trough then moves east to clear SA by late Sunday. A high pressure ridge then extends over the west and south of the State behind the low pressure system during Sunday. The high pressure ridge extends across the entire State and Coastal Waters by late Sunday and persists from Monday to Thursday.
Smith Island Temperature Statistics View More
December Temperature
Port Lincoln Airport (45km)
Lowest 7 December, 2025
8.1 °CAverage December
18.8 °CHighest 18 December, 2025
42.7 °C
Climate (2020–Present)
Port Lincoln Airport (45km)
Average Low 2020–2025
11.4 °CAverage 2020–2025
15.8 °CAverage High 2020–2025
21.3 °C