Port Bonython Weather Forecast

    • 14
    • 30

    Clear

    • 14
    • 29

    Mostly sunny

    • 15
    • 31

    Possible late shower

    • 14
    • 23

    Possible shower then sunny

    • 13
    • 25

    Sunny

    • 13
    • 28

    Partly cloudy

    • 15
    • 27

    Partly cloudy

Today 23 Apr Whyalla

Sunny. Winds north to northeasterly 15 to 20 km/h tending east to northeasterly 15 to 25 km/h in the middle of the day then tending north to northeasterly 15 to 20 km/h in the evening.

Spencer Gulf Coastal Waters

Wind
North to northeasterly 10 to 15 knots, reaching up to 20 knots south of Cowell to Wallaroo during the afternoon and evening.
Seas
Below 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo during the afternoon.
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 strong high pressure system east of Tasmania will maintain a ridge over SA this week. A cold front will pass over the south on Saturday, weakening and clearing in the east early Sunday. A new high pressure system will develop in the Bight on Sunday, slowly drifting to the southeast on Monday while continuing to extend a ridge over SA.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Port Bonython Temperature Statistics View More

April Temperature

Whyalla Airport (24km)

  • Lowest 15 April, 2026

    8.5 °C

  • Average April

    19.4 °C

  • Highest 6 April, 2026

    34.7 °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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