Port Moonta Weather Forecast

    • 6
    • 25

    Mostly sunny

    • 11
    • 29

    Partly cloudy

    • 10
    • 26

    Partly cloudy

    • 10
    • 26

    Partly cloudy

    • 10
    • 27

    Partly cloudy

    • 12
    • 30

    Mostly sunny

    • 15
    • 27

    Shower or two

Today 23 Sep Yorke Peninsula

Mostly sunny. Winds north to northeasterly 15 to 20 km/h becoming light in the middle of the day then becoming east to northeasterly 15 to 20 km/h in the late evening. Daytime maximum temperatures in the low to mid 20s.

Spencer Gulf Coastal Waters

Wind
East to northeasterly 10 to 15 knots decreasing to about 10 knots in the evening.
Seas
Around 1 metre.
1st Swell
South to southwesterly around 1 metre, increasing to 1 to 2 metres south of Cowell to Wallaroo.
Weather
Sunny.
Weather Situation
A high pressure system centred over the Tasman Sea extends a ridge over SA ahead of a low pressure trough that is expected to move over the far west of SA during Wednesday. The trough will slip southeastwards over southern coasts during Thursday and Friday, before being confined to the west over the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Port Moonta Temperature Statistics View More

September Temperature

Kadina Airport (14km)

  • Lowest 17 September, 2026

    0.9 °C

  • Average September

    12.6 °C

  • Highest 19 September, 2026

    28.8 °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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