Port Bonython Weather Forecast
- 10
- 22
Partly cloudy
- 10
- 19
Shower or two
- 10
- 21
Shower or two
- 11
- 17
Cloudy
- 10
- 18
Shower or two
- 11
- 19
Partly cloudy
- 11
- 20
Partly cloudy
Today 4 May Whyalla
Partly cloudy. Slight chance of a shower. Winds southwesterly 15 to 25 km/h becoming light in the late evening.
Spencer Gulf Coastal Waters
- Wind
- Southwesterly 15 to 20 knots.
- Seas
- 1.5 metres.
- 1st Swell
- South to southwesterly around 1 metre, increasing to 1 to 2 metres south of Cowell to Wallaroo.
- Weather
- Partly cloudy. 50% chance of showers.
- Weather Situation
- A low pressure system in Bass Strait and associated trough will clear eastwards, weakening their influence of SA by Monday evening. A ridge of high pressure will begin to extend from the west on Tuesday and will be briefly be weakened as a cold front crosses the southeast on Wednesday afternoon. The ridge will begin to re-establish in the wake of the front and stabilise over SA with the slow moving high pressure centre sitting south of WA by Friday.
Port Bonython Temperature Statistics View More
May Temperature
Whyalla Airport (24km)
Lowest 3 May, 2026
8.8 °CAverage May
18.5 °CHighest 1 May, 2026
30.7 °C
Climate (2021–Present)
Whyalla Airport (24km)
Average Low 2021–2026
12 °CAverage 2021–2026
17.5 °CAverage High 2021–2026
23.8 °C