Port Bonython Weather Forecast
- 14
- 26
Possible shower
- 17
- 30
Showers. Storm clearing
- 17
- 31
Sunny
- 18
- 36
Cloud clearing
- 16
- 28
Possible shower
- 15
- 25
Mostly sunny
- 13
- 23
Partly cloudy
Today 21 Nov Whyalla
Partly cloudy. Medium chance of showers, most likely during this afternoon and evening. Winds east to southeasterly 15 to 25 km/h tending south to southeasterly 20 to 25 km/h in the afternoon.
Spencer Gulf Coastal Waters
- Wind
- East to southeasterly 15 to 20 knots.
- Seas
- 1 to 1.5 metres, decreasing to 1 metre during the afternoon, then increasing to 1 to 1.5 metres by early evening.
- 1st Swell
- South to southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres around midday.
- Weather
- Partly cloudy.
- Weather Situation
- A high pressure system positioned well south of the Bight is expected to pass over Tasmania on Friday. A low pressure trough near the WA border is forecast to move over SA during the weekend, reaching eastern districts late Saturday. A secondary low pressure trough is expected to move over from the west early next week, clearing to the east of the state late Monday.
Port Bonython Temperature Statistics View More
November Temperature
Whyalla Airport (24km)
Lowest 12 November, 2025
5.1 °CAverage November
17.6 °CHighest 1 November, 2025
30.3 °C
Climate (2020–Present)
Whyalla Airport (24km)
Average Low 2020–2025
11.9 °CAverage 2020–2025
17.4 °CAverage High 2020–2025
23.8 °C