Whyalla Marina Weather Forecast

    • 15
    • 25

    Becoming windy. Partly cloudy

    • 14
    • 26

    Becoming windy. Sunny

    • 15
    • 29

    Sunny

    • 18
    • 33

    Sunny

    • 18
    • 36

    Sunny

    • 20
    • 36

    Mostly sunny

    • 21
    • 35

    Becoming windy. Partly cloudy

Today 24 Dec Whyalla

Cloud clearing. Winds southeast to southwesterly 30 to 45 km/h.

Spencer Gulf Coastal Waters

Wind
Southerly 15 to 20 knots, reaching up to 30 knots north of Cowell to Wallaroo during the afternoon and evening. Winds turning southeasterly in the late evening.
Seas
Around 1 metre, increasing to 1.5 to 2.5 metres during the afternoon.
1st Swell
South to southwesterly 1 to 1.5 metres, increasing to 1.5 to 2.5 metres south of Cowell to Wallaroo.
Weather
Partly cloudy.
Weather Situation
A ridge of high pressure persists across South Australia this week as the high centre moves to the south of the Bight on Thursday, continuing eastwards on Friday, to be in the Tasman Sea on Saturday. A trough embedded in the southwesterly flow around the ridge clips the southeast this morning.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Whyalla Marina Temperature Statistics View More

December Temperature

Whyalla Airport (6km)

  • Lowest 2 December, 2025

    10.2 °C

  • Average December

    22.2 °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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