Port Bonython Weather Forecast

    • 9
    • 21

    Sunny

    • 9
    • 21

    Sunny

    • 10
    • 20

    Sunny

    • 8
    • 22

    Mostly sunny

    • 12
    • 25

    Possible shower

    • 12
    • 18

    Cloudy

    • 10
    • 21

    Partly cloudy

Today 28 Aug Whyalla

Sunny. Light winds.

Spencer Gulf Coastal Waters

Wind
Northerly 10 to 15 knots becoming variable about 10 knots in the middle of the day.
Seas
Below 1 metre.
1st Swell
South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo.
Weather
Sunny.
Weather Situation
A high pressure system over NSW will weaken and merge with another high pressure system to the south of SA today as a low pressure trough hovers over WA close to the SA border. The high to the south will move slowly east over the weekend to be centred over Victoria by Monday, strengthening a ridge over South Australia into next week.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Port Bonython Temperature Statistics View More

August Temperature

Whyalla Airport (24km)

  • Lowest 1 August, 2026

    -0.4 °C

  • Average August

    12.4 °C

  • Highest 7 August, 2026

    21.4 °C

Climate (2021–2026)

Whyalla Airport (24km)

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  • Average Low 2021–2026

    12 °C

  • Average 2021–2026

    17.6 °C

  • Average High 2021–2026

    23.8 °C
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