Port Bonython Weather Forecast

    • 18
    • 29

    Sunny

    • 18
    • 31

    Sunny

    • 19
    • 31

    Sunny

    • 20
    • 29

    Partly cloudy

    • 18
    • 21

    Possible shower

    • 13
    • 19

    Cloudy

    • 12
    • 21

    Mostly sunny

Today 22 Mar Whyalla

Sunny. Winds southerly 15 to 20 km/h becoming light in the early morning then becoming south to southeasterly 15 to 25 km/h in the late afternoon.

Spencer Gulf Coastal Waters

Wind
Variable about 10 knots becoming south to southeasterly 10 to 15 knots in the early afternoon.
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 the Tasman sea, extends a ridge over southern SA. A broad trough moves over SA early next week, then a cold front clips the southeast and an upper trough moves up over SA Wednesday and Thursday. A new ridge develops south of the Bight mid next week.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Port Bonython Temperature Statistics View More

March Temperature

Whyalla Airport (24km)

  • Lowest 14 March, 2026

    10.8 °C

  • Average March

    20.9 °C

  • Highest 10 March, 2026

    34.9 °C

Climate (2021–Present)

Whyalla Airport (24km)

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  • Average Low 2021–2026

    11.9 °C

  • Average 2021–2026

    17.5 °C

  • Average High 2021–2026

    23.8 °C
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