Port Bonython Weather Forecast

    • 12
    • 23

    Cloud clearing

    • 14
    • 33

    Mostly sunny

    • 21
    • 37

    Mostly sunny

    • 17
    • 29

    Mostly sunny

    • 17
    • 23

    Shower or two. Becoming windy

    • 13
    • 23

    Mostly sunny

    • 14
    • 30

    Sunny

Today 2 Dec Whyalla

Cloud clearing. Light winds becoming southeasterly 15 to 25 km/h in the middle of the day then tending southerly in the evening.

Spencer Gulf Coastal Waters

Wind
Variable about 10 knots becoming south to southeasterly 10 to 15 knots in the late afternoon then becoming variable about 10 knots in the late evening.
Seas
Below 1 metre.
1st Swell
South to southwesterly around 1 metre, increasing to 1 to 2 metres south of Cowell to Wallaroo.
Weather
Cloud clearing.
Weather Situation
A high pressure system near the WA and SA border extends a ridge over SA. The high pressure system is expected to slowly move over SA during today and be in the Tasman Sea on Wednesday. A low pressure trough will then move across SA during Wednesday and Thursday, followed by another ridge of high pressure.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Port Bonython Temperature Statistics View More

December Temperature

Whyalla Airport (24km)

  • Lowest 1 December, 2025

    12.8 °C

  • Average December

    16.5 °C

  • Highest

    –

Climate (2020–Present)

Whyalla Airport (24km)

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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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