Port of Whyalla Weather Forecast
- 7
- 26
Sunny
- 10
- 29
Sunny
- 15
- 31
Mostly sunny
- 10
- 19
Partly cloudy
- 7
- 22
Sunny
- 9
- 26
Mostly sunny
- 11
- 30
Partly cloudy
Today 18 Sep Whyalla
Sunny. Winds north to northwesterly 15 to 25 km/h becoming light in the late evening.
Spencer Gulf Coastal Waters
- Wind
- North to northeasterly about 10 knots increasing to 10 to 15 knots in the early morning then becoming variable about 10 knots in the evening.
- Seas
- Below 1 metre.
- 1st Swell
- South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo.
- Weather
- Sunny.
- Weather Situation
- A strong high pressure system centred over Victoria will maintain a ridge across SA as it drifts slowly over NSW. A cold front will then approach from the west late Saturday and move across SA on Sunday, before another ridge pushes in behind the front. The associated high will then move eastwards across waters south from Monday.
Port of Whyalla Temperature Statistics View More
September Temperature
Whyalla Airport (8km)
Lowest 11 September, 2026
3.4 °CAverage September
14.5 °CHighest 13 September, 2026
28.9 °C
Climate (2021–2026)
Whyalla Airport (8km)
Average Low 2021–2026
12 °CAverage 2021–2026
17.5 °CAverage High 2021–2026
23.8 °C