Sibsey Island Weather Forecast
- 15
- 17
Partly cloudy
- 16
- 19
Sunny
- 17
- 19
Partly cloudy
- 17
- 19
Partly cloudy
- 17
- 21
Partly cloudy
- 19
- 21
Partly cloudy
- 17
- 18
Windy
Today 7 Dec Lower Eyre Peninsula
Mostly sunny. Winds southeast to southwesterly 15 to 20 km/h tending northeast to southeasterly in the morning then tending northwest to southwesterly 15 to 25 km/h in the middle of the day. Overnight temperatures falling to between 6 and 9 with daytime temperatures reaching the low to mid 20s.
Spencer Gulf Coastal Waters
- Wind
- South to southeasterly 10 to 15 knots, reaching up to 20 knots north of Cowell to Wallaroo early in the morning. Winds tending northwest to southwesterly in the middle of the day then tending southeast to southwesterly in the early afternoon.
- Seas
- 1 to 1.5 metres, decreasing below 1 metre during the morning.
- 1st Swell
- South to southwesterly below 1 metre, increasing to 1 to 2 metres south of Cowell to Wallaroo.
- Weather
- Partly cloudy.
- Weather Situation
- A high pressure system is building west of the Bight. The high will move slowly eastwards today and early next week to be centred over the Tasman Sea by Monday. Another weak cold front clips the southeast late Monday, before another high pressure ridge develops south of the Bight on Tuesday. A trough of low pressure develops across the far north on Tuesday and Wednesday.
Sibsey Island Temperature Statistics View More
December Temperature
Port Lincoln Airport (28km)
Lowest 2 December, 2025
8.5 °CAverage December
18.3 °CHighest 3 December, 2025
35.3 °C
Climate (2020–Present)
Port Lincoln Airport (28km)
Average Low 2020–2025
11.4 °CAverage 2020–2025
15.7 °CAverage High 2020–2025
21.3 °C