MacDonnell Bay Weather Forecast

    • 5
    • 15

    Clear

    • 5
    • 21

    Partly cloudy

    • 13
    • 22

    Sunny

    • 13
    • 21

    Shower

    • 10
    • 13

    Cloudy

    • 4
    • 17

    Partly cloudy

    • 6
    • 19

    Partly cloudy

Today 17 Sep Lower South East

Clear. Light winds.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Northwesterly 10 to 15 knots.
Seas
Below 0.5 metres, increasing to below 1 metre south of Beachport.
1st Swell
Southwesterly 3 metres.
Weather
Partly cloudy.
Weather Situation
A strong high pressure system centred over Victoria will maintain a ridge across SA as it drifts slowly over NSW from Friday. A cold front will then approach from the west late Saturday and move across SA on Sunday, before another ridge pushes in behind the front. The associated high will then move eastwards across waters south from Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

MacDonnell Bay Temperature Statistics View More

September Temperature

Mount Gambier Airport (34km)

  • Lowest 8 September, 2026

    0.3 °C

  • Average September

    11.4 °C

  • Highest 12 September, 2026

    21.8 °C

Climate (2021–2026)

Mount Gambier Airport (34km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    13.7 °C

  • Average High 2021–2026

    20.1 °C
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