Port of Whyalla Weather Forecast

    • 17
    • 27

    Mostly sunny

    • 19
    • 29

    Possible shower. Windy

    • 15
    • 24

    Cloud clearing

    • 15
    • 24

    Becoming windy. Partly cloudy

    • 15
    • 25

    Becoming windy. Partly cloudy

    • 16
    • 27

    Mostly sunny

    • 17
    • 31

    Sunny

Today 20 Dec Whyalla

Mostly sunny. Winds southerly 25 to 35 km/h.

Spencer Gulf Coastal Waters

Wind
Southerly 15 to 20 knots, reaching up to 25 knots north of Cowell to Wallaroo in the late afternoon. Winds turning east to southeasterly 10 to 15 knots in the late evening.
Seas
1 to 1.5 metres, decreasing to 1 metre during the morning, increasing to 1 to 1.5 metres north of Cowell to Wallaroo around midday.
1st Swell
South to southwesterly 1 to 1.5 metres, decreasing to around 1 metre around midday.
Weather
Partly cloudy.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Port of Whyalla Temperature Statistics View More

December Temperature

Whyalla Airport (8km)

  • Lowest 2 December, 2025

    10.2 °C

  • Average December

    22.7 °C

  • Highest 18 December, 2025

    42.6 °C

Climate (2020–Present)

Whyalla Airport (8km)

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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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