Whyalla Marina Weather Forecast

    • 15
    • 26

    Becoming windy. Sunny

    • 15
    • 29

    Sunny

    • 17
    • 31

    Sunny

    • 17
    • 28

    Becoming windy. Sunny

    • 16
    • 27

    Becoming windy. Partly cloudy

    • 16
    • 30

    Sunny

    • 17
    • 37

    Sunny

Today 31 Dec Whyalla

Sunny. Winds southerly 30 to 45 km/h.

Spencer Gulf Coastal Waters

Wind
South to southeasterly 15 to 25 knots, reaching up to 30 knots north of Cowell to Wallaroo during the afternoon and evening.
Seas
1.5 to 2 metres.
1st Swell
South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo.
Weather
Cloud clearing.
Weather Situation
A high pressure system south of the Bight holds a persistent ridge over coastal waters. This high will move over Tasmania on Friday before it's replaced by a new high pressure system on Saturday.
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

    22.4 °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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