Port Bonython Weather Forecast
- 17
- 26
Becoming windy. Mostly sunny
- 18
- 29
Sunny
- 18
- 36
Sunny
- 19
- 26
Becoming windy. Sunny
- 18
- 29
Becoming windy. Partly cloudy
- 20
- 30
Becoming windy. Sunny
- 20
- 32
Sunny
Today 16 Jan Whyalla
Clear. Winds southerly 35 to 45 km/h decreasing to 30 to 35 km/h in the late evening.
Spencer Gulf Coastal Waters
- Wind
- South to southeasterly 20 to 25 knots, reaching up to 30 knots during the afternoon and evening.
- Seas
- 1.5 to 2 metres.
- 1st Swell
- South to southwesterly below 1 metre.
- Weather
- Cloud clearing.
- Weather Situation
- A ridge of high pressure south of SA will persist over the coming days, with the high centre moving to the southeast, to be south of Tasmania today and to the Tasman Sea later over the weekend. The ridge lingers into tomorrow. On Sunday a trough will begin to move in from the west, reaching central districts by the evening and into the northeast early next week.
Port Bonython Temperature Statistics View More
January Temperature
Whyalla Airport (24km)
Lowest 6 January, 2026
15 °CAverage January
23.6 °CHighest 8 January, 2026
47.8 °C
Climate (2021–Present)
Whyalla Airport (24km)
Average Low 2021–2026
11.8 °CAverage 2021–2026
17.5 °CAverage High 2021–2026
23.8 °C