Port Bonython Weather Forecast
- 19
- 25
Sunny
- 19
- 25
Partly cloudy
- 18
- 25
Sunny
- 18
- 28
Sunny
- 18
- 29
Sunny
- 18
- 27
Mostly sunny
- 18
- 25
Partly cloudy
Today 19 Mar Whyalla
Sunny. Winds southerly 25 to 35 km/h.
Spencer Gulf Coastal Waters
- Wind
- South to southeasterly 15 to 20 knots, reaching up to 25 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 during the afternoon.
- 1st Swell
- South to southwesterly around 1 metre.
- Weather
- Partly cloudy.
- Weather Situation
- A weak ridge of high pressure will remain along the coast during the next few days.
Port Bonython Temperature Statistics View More
March Temperature
Whyalla Airport (24km)
Lowest 14 March, 2026
10.8 °CAverage March
20.8 °CHighest 10 March, 2026
34.9 °C
Climate (2021–Present)
Whyalla Airport (24km)
Average Low 2021–2026
11.9 °CAverage 2021–2026
17.5 °CAverage High 2021–2026
23.8 °C