Whyalla Marina Weather Forecast

    • 13
    • 33

    Mostly sunny

    • 20
    • 38

    Late cool change. Windy

    • 16
    • 27

    Mostly sunny

    • 17
    • 23

    Morning shower or two. Windy

    • 13
    • 23

    Mostly sunny

    • 14
    • 29

    Sunny

    • 16
    • 31

    Sunny

Today 3 Dec Whyalla

Mostly sunny. Winds northerly 20 to 30 km/h.

Spencer Gulf Coastal Waters

Wind
North to northeasterly 10 to 15 knots, reaching up to 20 knots near the Yorke Peninsula coast in the late morning. Winds tending east to northeasterly in the late afternoon then tending north to northeasterly in the late evening.
Seas
Around 1 metre.
1st Swell
South to southwesterly around 1 metre.
Weather
Mostly sunny.
Weather Situation
A high pressure system will continue to slowly move eastwards to be centred over the Tasman Sea by Wednesday evening. A low pressure trough will then move into the west of SA late Wednesday and extend northeastwards during Thursday, followed by another ridge of high pressure. A weak cold front clips the far southeast Saturday 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

    15.8 °C

  • Highest 1 December, 2025

    21.9 °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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