Port Bonython Weather Forecast
- 23
- 39
Windy. Clear
- 18
- 23
Windy. Partly cloudy
- 16
- 24
Becoming windy. Partly cloudy
- 16
- 27
Sunny
- 16
- 28
Sunny
- 18
- 27
Becoming windy. Mostly sunny
- 16
- 25
Becoming windy. Mostly sunny
Today 9 Jan Whyalla
Clear. Winds southerly 30 to 45 km/h.
Spencer Gulf Coastal Waters
- Wind
- South to southwesterly 20 to 30 knots.
- Seas
- 1.5 to 2.5 metres.
- 1st Swell
- South to southwesterly around 1 metre.
- Weather
- Mostly clear. The chance of a thunderstorm north of Cowell to Wallaroo early this evening.
- Weather Situation
- A low pressure trough over the pastoral districts will continue to move into the far northeast, meanwhile a cold front will cross the south late Friday. The trough will exit the far northeast during Saturday afternoon whilst a high pressure ridge will be begin to develop across the south. This ridge will persist across the state over the coming days with the high pressure centre moving south of the Bight on Sunday. On Tuesday a trough will develop in the far west while the ridge remains in the east.
Port Bonython Temperature Statistics View More
January Temperature
Whyalla Airport (24km)
Lowest 6 January, 2026
15 °CAverage January
25 °CHighest 7 January, 2026
45.8 °C
Climate (2021–Present)
Whyalla Airport (24km)
Average Low 2021–2026
11.8 °CAverage 2021–2026
17.5 °CAverage High 2021–2026
23.8 °C