Spencer Gulf Weather Forecast
- 15
- 21
Shower
- 16
- 17
Shower
- 13
- 16
Cloudy
- 14
- 16
Partly cloudy
- 13
- 16
Partly cloudy
- 14
- 16
Partly cloudy
- 13
- 17
Partly cloudy
Today 4 Sep Flinders
Cloudy. Very high chance of showers south of Hawker, high chance elsewhere. The chance of a thunderstorm west of the ranges. Winds east to northeasterly 15 to 20 km/h turning north to northwesterly 25 to 35 km/h during the day. Daytime maximum temperatures 20 to 27.
Spencer Gulf Coastal Waters
- Wind
- North to northeasterly 15 to 20 knots turning northwesterly 15 to 25 knots in the late afternoon.
- Seas
- Around 1 metre, increasing to 1 to 1.5 metres around midday.
- 1st Swell
- South to southwesterly 1 to 2 metres, increasing to 2 to 3 metres south of Port Neill to Port Victoria.
- Weather
- Partly cloudy. 90% chance of showers. The chance of a thunderstorm.
- Weather Situation
- A high pressure ridge over SA will move to the east during this morning, as a trough moves over the state during the day, followed by a strong cold front early Saturday. A high pressure system will then move across the state, behind the front, and merge with another high located to the southwest of WA on Sunday to extend a ridge across much of SA into next week. A low pressure system is also expected to move in vicinity of the WA border late Sunday and may extend a trough into far west SA into next week.
Spencer Gulf Temperature Statistics View More
September Temperature
Whyalla Airport (38km)
Lowest 3 September, 2026
6.7 °CAverage September
15 °CHighest 1 September, 2026
27.7 °C
Climate (2021–2026)
Whyalla Airport (38km)
Average Low 2021–2026
12 °CAverage 2021–2026
17.5 °CAverage High 2021–2026
23.8 °C