Whyalla Marina Weather Forecast
- 9
- 23
Sunny
- 8
- 18
Cloudy
- 8
- 21
Partly cloudy
- 9
- 18
Possible shower
- 8
- 17
Cloud clearing
- 7
- 19
Sunny
- 7
- 24
Mostly sunny
Today 19 Sep Whyalla
Sunny day. Slight chance of a shower this evening. Light winds becoming westerly 15 to 25 km/h in the morning then tending southwesterly 20 to 30 km/h in the middle of the day.
Spencer Gulf Coastal Waters
- Wind
- West to northwesterly 15 to 20 knots tending west to southwesterly 20 to 25 knots in the late morning and early afternoon. Winds reaching up to 30 knots south of Cowell to Wallaroo during the afternoon and evening.
- 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, increasing to 1 to 1.5 metres south of Port Neill to Port Victoria later in the evening.
- Weather
- Becoming cloudy. 50% chance of showers.
- Weather Situation
- A high pressure system lies to the west of the country with a ridge extending into the west of the state. A cold front will pass over the south during Friday afternoon with a southwesterly flow persisting through the weekend as a ridge of high pressure extends over northern parts of the state.
Whyalla Marina Temperature Statistics View More
September Temperature
Whyalla Airport (6km)
Lowest 1 September, 2025
2.8 °CAverage September
15.2 °CHighest 6 September, 2025
33.8 °C
Climate (2020–Present)
Whyalla Airport (6km)
Average Low 2020–2025
11.9 °CAverage 2020–2025
17.5 °CAverage High 2020–2025
23.8 °C