Port Moonta Weather Forecast

    • 7
    • 17

    Showers

    • 6
    • 16

    Showers easing

    • 5
    • 16

    Partly cloudy

    • 4
    • 16

    Cloudy

    • 5
    • 17

    Cloudy

    • 6
    • 17

    Partly cloudy

    • 5
    • 19

    Possible shower

Today 11 Aug Yorke Peninsula

Cloudy. High chance of showers. Winds west to northwesterly 20 to 30 km/h.

Spencer Gulf Coastal Waters

Wind
Northwest to southwesterly 15 to 20 knots, reaching up to 30 knots south of Port Neill to Port Victoria.
Seas
Around 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo.
1st Swell
South to southwesterly below 1 metre, increasing to 1 to 2 metres south of Cowell to Wallaroo.
Weather
Cloudy. 70% chance of showers.
Weather Situation
A cold front crossing the western parts of SA will continue moving eastwards and cross the rest of the state overnight into the early parts of Wednesday. A ridge of high pressure will then push into SA from the west throughout Wednesday, with the associated high moving over SA on Thursday. The high then gradually drifts southwards to be located in vicinity of Tasmania over the weekend, as it continues extending a ridge across SA.
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Port Moonta Temperature Statistics View More

August Temperature

Kadina Airport (14km)

  • Lowest 1 August, 2026

    -0.8 °C
  • Average August

    10.5 °C
  • Highest 7 August, 2026

    19 °C

Climate (2021–2026)

Kadina Airport (14km)

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  • Average Low 2021–2026

    10.2 °C
  • Average 2021–2026

    16.4 °C
  • Average High 2021–2026

    23.5 °C
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