Whyalla Weather Forecast

    • 20
    • 39

    Becoming windy. Partly cloudy

    • 18
    • 27

    Windy. Mostly sunny

    • 15
    • 24

    Becoming windy. Partly cloudy

    • 14
    • 24

    Becoming windy. Partly cloudy

    • 14
    • 28

    Sunny

    • 17
    • 34

    Sunny

    • 19
    • 36

    Sunny

Today 12 Dec Whyalla

Partly cloudy. Light winds becoming east to southeasterly 15 to 25 km/h in the morning then turning southerly 30 to 45 km/h in the early afternoon.

Extreme Fire Danger Rating

Take action now to protect life and property

Spencer Gulf Coastal Waters

Wind
Variable about 10 knots becoming southerly 15 to 25 knots in the middle of the day. Winds reaching up to 30 knots north of Cowell to Wallaroo in the evening.
Seas
Below 1 metre, increasing to 1 to 2 metres during the afternoon.
1st Swell
South to southwesterly below 1 metre, increasing to around 1 metre south of Cowell to Wallaroo.
Weather
Partly cloudy.
Weather Situation
A trough will sweep across across the coastal waters today, clearing to the east in the late evening. A ridge of high pressure will begin to move in from the southwest on the weekend with the high pressure centre establishing south of the Bight on Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Whyalla Temperature Statistics View More

December Temperature

Whyalla Airport (6km)

  • Lowest 2 December, 2025

    10.2 °C

  • Average December

    21.6 °C

  • Highest 4 December, 2025

    40.7 °C

Climate (2020–Present)

Whyalla Airport (6km)

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  • Average Low 2020–2025

    11.8 °C

  • Average 2020–2025

    17.4 °C

  • Average High 2020–2025

    23.7 °C
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