MacDonnell Bay Weather Forecast

    • 10
    • 13

    Shower

    • 8
    • 13

    Shower

    • 7
    • 13

    Shower

    • 5
    • 14

    Shower

    • 3
    • 14

    Cloudy

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    • 14

    Shower

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    • 14

    Shower

Today 28 Jul Lower South East

Cloudy. Very high chance of showers, becoming less likely late this afternoon and evening. Possible small hail in the south during this afternoon and evening. Winds northwesterly 20 to 30 km/h turning west to southwesterly 30 to 45 km/h during the day. Daytime maximum temperatures around 14.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
West to northwesterly 25 to 30 knots tending west to southwesterly during the day. Winds reaching up to 35 knots south of Port MacDonnell during the afternoon and evening.
Seas
2 to 3 metres, increasing to 2.5 to 4 metres south of Port MacDonnell.
1st Swell
Westerly 3 to 4 metres, increasing to 4 to 6 metres during the afternoon, then tending southwesterly 6 to 7 metres later in the evening.
Weather
Cloudy. Near 100% chance of showers. The chance of a thunderstorm south of Port MacDonnell late this afternoon and evening. Possible small hail from late this morning.
Weather Situation
A trough will continue to move over southeastern parts of the state today. A cold front will clip the far southeast this afternoon and evening before a high pressure system moves over the Bight from Wednesday. The high will extend a ridge across the state, as it slowly moves east into NSW by Saturday.
Graph Plots Open in Graphs
  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

MacDonnell Bay Temperature Statistics View More

July Temperature

Mount Gambier Airport (34km)

  • Lowest 7 July, 2026

    -1.1 °C
  • Average July

    9.5 °C
  • Highest 1 July, 2026

    16.7 °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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