Sleaford Islands Weather Forecast
- 14
- 23
Clear
- 15
- 33
Sunny
- 21
- 37
Mostly sunny
- 15
- 29
Mostly sunny
- 17
- 41
Sunny
- 21
- 31
Mostly sunny
- 16
- 24
Partly cloudy
Today 22 Jan Port Lincoln
Clear. Winds east to southeasterly 25 to 30 km/h.
Central Coastal Waters
- Wind
- East to southeasterly 15 to 20 knots.
- Seas
- 1 to 1.5 metres.
- 1st Swell
- Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres later in the evening.
- Weather
- Clear.
- Weather Situation
- A low pressure trough lingers over the far northeast of SA until Friday. A high pressure system south of the Bight maintains a ridge over western and southern SA as it moves eastwards today, to be over the Tasman Sea on Friday. A trough of low pressure approaches from the west late on Friday and is forecast to move over southern SA during Saturday, then lingers through inland SA into Sunday. Another high pressure system is expected to move over waters to the south over the weekend, extending a ridge over southern SA on Sunday, before a second trough moves in from the west on Monday.
Sleaford Islands Temperature Statistics View More
January Temperature
Port Lincoln Airport (38km)
Lowest 6 January, 2026
11.9 °CAverage January
19.7 °CHighest 7 January, 2026
44.5 °C
Climate (2021–Present)
Port Lincoln Airport (38km)
Average Low 2021–2026
11.4 °CAverage 2021–2026
15.8 °CAverage High 2021–2026
21.3 °C