Port Bonython Weather Forecast

    • 14
    • 20

    Windy. Partly cloudy

    • 12
    • 21

    Partly cloudy

    • 12
    • 22

    Shower or two

    • 15
    • 27

    Showers. Storm

    • 16
    • 25

    Possible morning storm. Showers

    • 13
    • 21

    Shower or two

    • 11
    • 20

    Mostly sunny

Today 22 Oct Whyalla

Partly cloudy. Winds southerly 25 to 40 km/h decreasing to 20 to 25 km/h in the late evening.

Spencer Gulf Coastal Waters

Wind
Southwesterly 15 to 20 knots, reaching up to 25 knots north of Cowell to Wallaroo during the afternoon and evening. Winds turning southerly in the evening.
Seas
1.5 to 2 metres, decreasing to 1 to 1.5 metres later in the evening.
1st Swell
South to southwesterly around 1 metre, increasing to 1 to 2 metres south of Cowell to Wallaroo.
Weather
Partly cloudy.
Weather Situation
A weak high pressure system moving into the Bight will track eastwards across the state through Thursday. Come Friday a warm front will pass over western waters with the associated low pressure system moving along the coast across the weekend. A strong cold front associated with this low will sweep across coasts on Saturday, with a trough following through Sunday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Port Bonython Temperature Statistics View More

October Temperature

Whyalla Airport (24km)

  • Lowest 3 October, 2025

    6.1 °C

  • Average October

    18 °C

  • Highest 16 October, 2025

    38 °C

Climate (2020–Present)

Whyalla Airport (24km)

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  • Average Low 2020–2025

    11.9 °C

  • Average 2020–2025

    17.5 °C

  • Average High 2020–2025

    23.8 °C
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