Spencer Gulf Weather Forecast
- 15
- 21
Windy
- 18
- 23
Sunny
- 20
- 27
Sunny
- 24
- 31
Partly cloudy
- 25
- 27
Windy
- 20
- 22
Windy
- 20
- 22
Shower
Today 15 Dec Flinders
Clear. Winds southeasterly 25 to 35 km/h.
Spencer Gulf Coastal Waters
- Wind
- South to southeasterly 15 to 20 knots, reaching up to 30 knots north of Cowell to Wallaroo in the evening.
- Seas
- 1 to 1.5 metres, increasing to 1 to 2 metres north of Cowell to Wallaroo.
- 1st Swell
- South to southwesterly around 1 metre, increasing to 1 to 2 metres south of Cowell to Wallaroo.
- Weather
- Clear.
- Weather Situation
- A high pressure system to the south of the state will maintain a ridge across SA as it drifts into the Tasman by Wednesday. A trough of low pressure will briefly enter the far northeast of SA with another trough slowing moving across the south and west on Thursday. A south to southwesterly flow will establish across the coasts on Friday.
Spencer Gulf Temperature Statistics View More
December Temperature
Whyalla Airport (38km)
Lowest 2 December, 2025
10.2 °CAverage December
21.8 °CHighest 4 December, 2025
40.7 °C
Climate (2020–Present)
Whyalla Airport (38km)
Average Low 2020–2025
11.8 °CAverage 2020–2025
17.4 °CAverage High 2020–2025
23.7 °C