MacDonnell Bay Weather Forecast

    • 5
    • 18

    Partly cloudy

    • 8
    • 23

    Shower

    • 12
    • 18

    Cloudy

    • 10
    • 25

    Partly cloudy

    • 16
    • 24

    Partly cloudy

    • 11
    • 23

    Partly cloudy

    • 13
    • 27

    Partly cloudy

Today 18 Apr Lower South East

Sunny. Light winds. Daytime maximum temperatures around 20.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Northeasterly 10 to 15 knots, reaching up to 20 knots offshore in the late evening.
Seas
Below 1 metre, increasing to around 1 metre offshore.
1st Swell
Southwesterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres by early evening.
Weather
Mostly clear.
Weather Situation
A high pressure system centred west of Tasmania extends a ridge over western Victoria. A cold front over the far west of SA will weaken as it moves eastwards over central and eastern parts on Sunday morning. The high will move eastwards to be centred southeast of Tasmania later Sunday but will continue to extend a ridge over SA early next week. Another front will move across the south of SA late Tuesday and early Wednesday then another high will move across waters to the south during Wednesday.
Graph Plots Open in Graphs
  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

MacDonnell Bay Temperature Statistics View More

April Temperature

Mount Gambier Airport (34km)

  • Lowest 4 April, 2026

    3.6 °C
  • Average April

    14 °C
  • Highest 5 April, 2026

    25.3 °C

Climate (2021–Present)

Mount Gambier Airport (34km)

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  • Average Low 2021–2026

    8.8 °C
  • Average 2021–2026

    13.7 °C
  • Average High 2021–2026

    20 °C
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