Whyalla Weather Forecast
- 25
- 39
Mostly clear
- 23
- 30
Windy. Partly cloudy
- 18
- 25
Windy. Cloud clearing
- 15
- 28
Sunny
- 15
- 32
Sunny
- 18
- 30
Sunny
- 18
- 28
Sunny
Today 30 Jan Whyalla
Mostly sunny. Winds southerly 20 to 25 km/h tending southeasterly in the middle of the day then tending southeast to southwesterly 25 to 35 km/h in the early afternoon.
Spencer Gulf Coastal Waters
- Wind
- South to southeasterly 15 to 25 knots, reaching up to 30 knots south of Cowell to Wallaroo in the late afternoon.
- Seas
- 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the afternoon.
- 1st Swell
- South to southwesterly below 1 metre.
- Weather
- Mostly sunny.
- Weather Situation
- A low pressure trough lingering over northern parts of SA gradually moves east today as a high pressure system moves into the Tasman Sea. A stronger high pressure system moves into the Bight from the west on Saturday, pushing the trough out to the far northeast, with a south to southeasterly flow developing across the entire state by Sunday. The high continues to move eastwards, maintaining a ridge over southern parts, as the trough begins to develop in the north again.
Whyalla Temperature Statistics View More
January Temperature
Whyalla Airport (6km)
Lowest 23 January, 2026
12.3 °CAverage January
24.6 °CHighest 8 January, 2026
47.8 °C
Climate (2021–Present)
Whyalla Airport (6km)
Average Low 2021–2026
11.9 °CAverage 2021–2026
17.5 °CAverage High 2021–2026
23.8 °C