Port Moonta Weather Forecast

    • 5
    • 18

    Becoming cloudy

    • 8
    • 16

    Partly cloudy

    • 4
    • 19

    Sunny

    • 5
    • 21

    Sunny

    • 9
    • 23

    Mostly sunny

    • 12
    • 23

    Cloud clearing

    • 10
    • 21

    Shower or two

Today 8 Sep Yorke Peninsula

Becoming cloudy. Winds easterly 15 to 20 km/h becoming light in the early morning then becoming southerly 15 to 25 km/h in the early afternoon. Overnight temperatures falling to around 6 with daytime temperatures reaching around 18.

Spencer Gulf Coastal Waters

Wind
East to northeasterly 10 to 15 knots becoming variable about 10 knots in the morning then becoming southerly 15 to 20 knots in the early afternoon. Winds reaching up to 25 knots south of Cowell to Wallaroo in the late evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres later in the evening.
1st Swell
South to southwesterly below 1 metre, increasing to 1 to 2 metres south of Cowell to Wallaroo.
Weather
Becoming cloudy.
Weather Situation
A high pressure system, centred southwest of WA, extends a ridge across the south of SA. The main high centre will move across waters to the south throughout the week to be centred to the east of SA from late Thursday. A trough over the interior of WA will remain stationary for most of the week and may extend into the far west of the state at times.
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 7 September, 2026

    4.7 °C

  • Average September

    12.9 °C

  • Highest 1 September, 2026

    22.2 °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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