Sinclair Island Weather Forecast
- 19
- 20
Sunny
- 20
- 22
Windy
- 20
- 21
Partly cloudy
- 20
- 21
Partly cloudy
- 18
- 19
Partly cloudy
- 18
- 19
Partly cloudy
- 17
- 19
Cloudy
Today 9 Dec West Coast
Sunny. Winds east to southeasterly 15 to 25 km/h becoming southeasterly 25 to 40 km/h in the early afternoon. Daytime maximum temperatures 31 to 40.
Upper West Coastal Waters
Fowlers Bay to Elliston- Wind
- Southeasterly 15 to 25 knots, reaching up to 30 knots offshore in the evening.
- Seas
- 1 to 1.5 metres, increasing to 1.5 to 2 metres during the afternoon.
- 1st Swell
- Southwesterly 1.5 metres, increasing to 1.5 to 2 metres during the morning.
- Weather
- Sunny.
- Weather Situation
- A broad ridge extends over inland parts of the state, another high pressure system develops south of the Bight, strengthening the ridge over the state ahead of a trough of low pressure developing across the far northwest late Tuesday persisting late into the week.
Sinclair Island Temperature Statistics View More
December Temperature
Ceduna Airport (66km)
Lowest 8 December, 2025
6.4 °CAverage December
20 °CHighest 3 December, 2025
38.2 °C
Climate (2020–Present)
Ceduna Airport (66km)
Average Low 2020–2025
10.7 °CAverage 2020–2025
16.8 °CAverage High 2020–2025
23.7 °C