Riddoch Bay Weather Forecast

    • 11
    • 15

    Rain. Windy

    • 10
    • 16

    Shower or two

    • 9
    • 15

    Possible morning shower

    • 4
    • 15

    Partly cloudy

    • 10
    • 13

    Partly cloudy

    • 6
    • 15

    Partly cloudy

    • 5
    • 18

    Mostly sunny

Today 5 Sep Mount Gambier

Cloudy. Very high chance of rain, becoming less likely in the evening. The chance of a thunderstorm in the late morning and afternoon. Damaging winds possible. Winds westerly 25 to 40 km/h decreasing to 15 to 25 km/h in the late afternoon then tending southwesterly 15 to 20 km/h in the late evening.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Westerly 25 to 30 knots, reaching up to 35 knots north of Port MacDonnell in the early afternoon. Winds tending southwesterly in the late afternoon then decreasing to 20 to 25 knots in the evening.
Seas
2 to 3 metres.
1st Swell
West to southwesterly 3 to 4 metres.
Weather
Cloudy. 90% chance of showers. The chance of a thunderstorm in the late morning and afternoon with possible squalls.
Weather Situation
A cold front and trough will track east today clearing South Australia as a ridge of high pressure develops in its wake. A trough is then expected to develop near the western border on Sunday and remain near stationary nearly next week.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Riddoch Bay Temperature Statistics View More

September Temperature

Mount Gambier Airport (33km)

  • Lowest 1 September, 2026

    6.9 °C

  • Average September

    11.5 °C

  • Highest 1 September, 2026

    18.3 °C

Climate (2021–2026)

Mount Gambier Airport (33km)

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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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