Port Bonython Weather Forecast
- 19
- 27
Clear
- 16
- 25
Becoming windy. Mostly sunny
- 16
- 29
Becoming windy. Sunny
- 18
- 37
Sunny
- 21
- 42
Sunny
- 23
- 42
Mostly sunny
- 23
- 38
Mostly sunny
Today 3 Jan Whyalla
Clear. Winds southerly 30 to 40 km/h.
Spencer Gulf Coastal Waters
- Wind
- Southerly 15 to 20 knots, reaching up to 25 knots north of Cowell to Wallaroo.
- Seas
- 1.5 to 2 metres.
- 1st Swell
- South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo.
- Weather
- Mostly clear.
- Weather Situation
- A high pressure system centred south of SA extends a ridge over the west of the state and a broad trough lingers over the far northeast. These features will remain relatively stationary over the weekend then the high will move eastwards early next week. A broad trough will move across from the west mid next week.
Port Bonython Temperature Statistics View More
January Temperature
Whyalla Airport (24km)
Lowest 2 January, 2026
15.9 °CAverage January
20.8 °CHighest 1 January, 2026
28.3 °C
Climate (2021–Present)
Whyalla Airport (24km)
Average Low 2021–2026
11.8 °CAverage 2021–2026
17.4 °CAverage High 2021–2026
23.7 °C