Riddoch Bay Weather Forecast

    • 13
    • 23

    Sunny

    • 12
    • 22

    Shower or two. Windy

    • 9
    • 14

    Partly cloudy

    • 2
    • 16

    Mostly sunny

    • 4
    • 19

    Sunny

    • 9
    • 23

    Possible shower

    • 13
    • 23

    Possible shower

Today 19 Sep Mount Gambier

Sunny. Winds northwesterly 25 to 35 km/h decreasing to 15 to 20 km/h in the late afternoon then tending northerly in the evening.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Northwesterly 15 to 20 knots turning northerly in the late evening.
Seas
1 to 1.5 metres.
1st Swell
West to southwesterly 2 to 2.5 metres.
Weather
Sunny.
Weather Situation
A high pressure system centred over NSW extends a ridge over SA ahead of a cold front will approach from the west. The front moves across SA on Sunday. Another high pressure system will move eastwards across waters to the south during Monday then over Victoria on Tuesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Riddoch Bay Temperature Statistics View More

September Temperature

Mount Gambier Airport (33km)

  • Lowest 8 September, 2026

    0.3 °C

  • Average September

    11.2 °C

  • Highest 12 September, 2026

    21.8 °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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