Moonta Bay Weather Forecast

    • 12
    • 26

    Shower or two

    • 12
    • 22

    Showers

    • 8
    • 21

    Shower or two

    • 4
    • 21

    Sunny

    • 6
    • 21

    Partly cloudy

    • 7
    • 23

    Partly cloudy

    • 8
    • 20

    Possible shower

Today 30 Sep Yorke Peninsula

Partly cloudy. High chance of showers in the south, medium chance elsewhere. The chance of a thunderstorm late this afternoon and evening. Light winds becoming northwest to southwesterly 15 to 20 km/h in the middle of the day then becoming light in the late afternoon. Daytime maximum temperatures 22 to 27.

Spencer Gulf Coastal Waters

Wind
Northwest to southwesterly 10 to 15 knots becoming variable about 10 knots in the early morning.
Seas
Below 1 metre.
1st Swell
South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo.
Weather
Partly cloudy. 80% chance of showers south of Port Neill to Port Victoria, 50% chance elsewhere. The chance of a thunderstorm during this afternoon and evening.
Weather Situation
A series of slow moving troughs will move across the state today and Thursday as a couple of cold fronts move across waters to the south. A high pressure system will become established south of the Bight during Friday and persist there on Saturday. A trough will extend from WA over the far west of SA over the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Moonta Bay Temperature Statistics View More

September Temperature

Kadina Airport (13km)

  • Lowest 17 September, 2026

    0.9 °C

  • Average September

    14 °C

  • Highest 28 September, 2026

    32.2 °C

Climate (2021–2026)

Kadina Airport (13km)

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  • Average Low 2021–2026

    10.2 °C

  • Average 2021–2026

    16.5 °C

  • Average High 2021–2026

    23.5 °C
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