MacDonnell Bay Weather Forecast

    • 13
    • 17

    Rain

    • 13
    • 17

    Shower

    • 8
    • 19

    Shower

    • 10
    • 17

    Shower

    • 11
    • 17

    Shower

    • 10
    • 18

    Cloudy

    • 8
    • 18

    Shower

Today 16 May Lower South East

Cloudy. Very high chance of rain, becoming less likely in the late afternoon and evening. The chance of a thunderstorm in the late morning and afternoon. Winds northerly 20 to 30 km/h becoming light in the late afternoon. Daytime maximum temperatures around 18.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Northerly 15 to 20 knots, reaching up to 25 knots offshore in the late morning. Winds tending northwesterly in the early afternoon then becoming variable about 10 knots in the evening.
Seas
1 to 2 metres, decreasing below 1 metre later in the evening.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Cloudy. 95% chance of rain. The chance of a thunderstorm north of Port MacDonnell in the late morning and afternoon.
Weather Situation
A trough of low pressure about eastern waters will move into Bass Strait early Sunday morning. A ridge of high pressure builds in the west. A cold front will move over the south early in the week, followed by a high pressure system, which will linger in the Bight midweek.
Graph Plots Open in Graphs
  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

MacDonnell Bay Temperature Statistics View More

May Temperature

Mount Gambier Airport (34km)

  • Lowest 7 May, 2026

    5.5 °C
  • Average May

    14.2 °C
  • Highest 1 May, 2026

    28.5 °C

Climate (2021–Present)

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 °C
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