Port Bonython Weather Forecast

    • 19
    • 29

    Showers. Possible storm

    • 17
    • 22

    Shower or two. Becoming windy

    • 13
    • 20

    Cloudy

    • 12
    • 22

    Mostly sunny

    • 14
    • 24

    Sunny

    • 15
    • 27

    Sunny

    • 16
    • 31

    Sunny

Today 25 Mar Whyalla

Partly cloudy. High chance of showers, becoming less likely in the afternoon. The chance of a thunderstorm, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding in the late morning and afternoon. Winds west to northwesterly 15 to 20 km/h shifting southerly 25 to 35 km/h in the early afternoon.

Spencer Gulf Coastal Waters

Wind
Southerly 15 to 25 knots.
Seas
Around 1 metre, increasing to 1 to 1.5 metres around midday, then increasing to 1.5 to 2 metres by early evening.
1st Swell
South to southwesterly around 1 metre, increasing to 1 to 1.5 metres south of Port Neill to Port Victoria.
Weather
Partly cloudy. The chance of a thunderstorm.
Weather Situation
A broad trough lies over SA. A cold front clips the southeast as an upper trough moves up over SA today and tomorrow. A high pressure system develops south of the Bight late in the week and persists over the weekend.
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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

    21.3 °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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