MacDonnell Bay Weather Forecast

    • 1
    • 15

    Cloudy

    • 9
    • 14

    Cloudy

    • 8
    • 15

    Partly cloudy

    • 5
    • 18

    Partly cloudy

    • 8
    • 21

    Partly cloudy

    • 12
    • 22

    Shower

    • 12
    • 19

    Shower

Today 8 Sep Lower South East

Cloudy. Slight chance of a shower in the south later this evening. Near zero chance of rain elsewhere. Winds west to southwesterly 15 to 20 km/h tending south to southwesterly 20 to 30 km/h in the evening.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
West to southwesterly 15 to 20 knots tending south to southwesterly 20 to 25 knots in the evening. Winds reaching up to 30 knots in the evening.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres by early evening.
1st Swell
Southwesterly 3 metres, increasing to 3 to 4 metres south of Beachport.
Weather
Cloudy.
Weather Situation
A high pressure system centred south of WA extends a ridge across the south of SA. The main high centre will move eastwards during the week to be centred to the east of SA on Friday. A trough over the interior of WA will remain stationary for most of the week and may extend into the far west of SA at times. Another low pressure trough will approach from the west on Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

MacDonnell Bay Temperature Statistics View More

September Temperature

Mount Gambier Airport (34km)

  • Lowest 1 September, 2026

    6.9 °C

  • Average September

    11.8 °C

  • Highest 1 September, 2026

    18.3 °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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