Port Bonython Weather Forecast

    • 8
    • 16

    Partly cloudy

    • 10
    • 17

    Showers increasing

    • 8
    • 14

    Shower or two

    • 6
    • 14

    Mostly sunny

    • 6
    • 15

    Partly cloudy

    • 6
    • 16

    Partly cloudy

    • 8
    • 16

    Partly cloudy

Today 18 Jun Whyalla

Partly cloudy. Slight chance of a shower later this evening. Winds north to northwesterly 25 to 40 km/h decreasing to 20 to 25 km/h in the late evening.

Spencer Gulf Coastal Waters

Wind
North to northwesterly 20 to 30 knots tending west to northwesterly in the evening.
Seas
1.5 to 2.5 metres.
1st Swell
South to southwesterly below 1 metre.
Weather
Cloudy. 80% chance of showers south of Cowell to Wallaroo, 50% chance elsewhere.
Weather Situation
A low pressure system south of the Bight will drift to the south east while a trough extends across western coasts late on Thursday. This trough will linger along the coastline into Friday, developing into the cold front that will clear into the east early Saturday. A high pressure system will begin to move in from the west on Saturday, cross the Bight, slowly drifting to eastern SA by Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Port Bonython Temperature Statistics View More

June Temperature

Whyalla Airport (24km)

  • Lowest 8 June, 2026

    3.2 °C

  • Average June

    14.3 °C

  • Highest 12 June, 2026

    25.9 °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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