Port Macdonnell Weather Forecast

    • 9
    • 15

    Cloudy

    • 4
    • 16

    Partly cloudy

    • 4
    • 17

    Shower

    • 8
    • 16

    Shower

    • 9
    • 17

    Shower

    • 8
    • 18

    Cloudy

    • 7
    • 19

    Shower

Today 18 May Lower South East

Partly cloudy. Areas of frost this morning, mainly in the north. Light winds becoming south to southeasterly 15 to 20 km/h in the middle of the day then becoming light in the late afternoon. Daytime maximum temperatures around 16.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
South to southeasterly 10 to 15 knots becoming variable below 10 knots in the middle of the day.
Seas
Below 1 metre.
1st Swell
Southwesterly 3 to 4 metres, decreasing to 3 metres during the afternoon.
Weather
Cloudy.
Weather Situation
A high pressure system centred south of the Bight will move slowly eastwards to the south of Kangaroo Island today, then over eastern Victoria late Monday. A cold front will move over the south of SA on Tuesday then another high will move across the Bight mid to late next week.
Graph Plots Open in Graphs
  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Port Macdonnell Temperature Statistics View More

May Temperature

Mount Gambier Airport (34km)

  • Lowest 2 May, 2025

    1.2 °C
  • Average May

    13.2 °C
  • Highest 5 May, 2025

    26.7 °C

Climate (2020–Present)

Mount Gambier Airport (34km)

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  • Average Low 2020–2025

    8.8 °C
  • Average 2020–2025

    13.6 °C
  • Average High 2020–2025

    20 °C
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