Whyalla Weather Forecast

    • 20
    • 37

    Becoming windy. Sunny

    • 19
    • 27

    Windy. Partly cloudy

    • 15
    • 26

    Becoming windy. Sunny

    • 16
    • 30

    Sunny

    • 17
    • 32

    Mostly sunny

    • 18
    • 30

    Partly cloudy

    • 18
    • 28

    Cloud clearing

Today 29 Dec Whyalla

Sunny. Winds northwesterly 15 to 20 km/h tending northeast to southeasterly in the morning then tending southeast to southwesterly 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
Northeast to southeasterly 10 to 15 knots tending northwest to northeasterly in the morning then tending south to southwesterly 15 to 25 knots in the middle of the day. Winds reaching up to 30 knots in the evening.
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the afternoon, then increasing to 1.5 to 2 metres by early evening.
1st Swell
South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo.
Weather
Sunny.
Graph Plots Open in Graphs

  • 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

    22 °C

  • Highest 18 December, 2025

    42.6 °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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