MacDonnell Bay Weather Forecast

    • 12
    • 30

    Clear

    • 18
    • 39

    Sunny

    • 16
    • 20

    Cloudy

    • 15
    • 21

    Cloudy

    • 15
    • 24

    Partly cloudy

    • 15
    • 20

    Shower

    • 13
    • 18

    Shower

Today 26 Jan Lower South East

Clear. Winds west to southwesterly 15 to 25 km/h tending south to southwesterly in the late afternoon then becoming light in the evening.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Southeasterly 10 to 15 knots turning easterly in the late evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 metres.
Weather
Clear.
Weather Situation
A high pressure system over waters to the south moves eastwards over the Tasman Sea later today, directing a northerly airstream over SA. A low pressure trough enters the west of the State and is expected to move across the south on Tuesday. A secondary high pressure system moves into waters south of the Bight on Wednesday, tracking eastwards to reach the Tasman Sea on Thursday, maintaining a ridge over southern SA into Friday as another high pressure ridge extends in from the west.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

MacDonnell Bay Temperature Statistics View More

January Temperature

Mount Gambier Airport (34km)

  • Lowest 1 January, 2026

    6.9 °C

  • Average January

    18.8 °C

  • Highest 24 January, 2026

    42.6 °C

Climate (2021–Present)

Mount Gambier Airport (34km)

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  • Average Low 2021–2026

    8.8 °C

  • Average 2021–2026

    13.6 °C

  • Average High 2021–2026

    20 °C
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