Riddoch Bay Weather Forecast

    • 9
    • 27

    Clear

    • 16
    • 40

    Afternoon cool change

    • 14
    • 22

    Mostly sunny

    • 12
    • 30

    Sunny

    • 22
    • 35

    Mostly sunny

    • 17
    • 22

    Partly cloudy

    • 15
    • 20

    Partly cloudy

Today 23 Jan Mount Gambier

Clear. Winds southeasterly 15 to 20 km/h tending easterly in the evening.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Easterly 10 to 15 knots, reaching up to 20 knots south of Port MacDonnell during the afternoon and evening.
Seas
Below 1 metre, increasing to 1 to 1.5 metres south of Beachport by early evening.
1st Swell
Southwesterly 1 to 1.5 metres.
Weather
Clear.
Weather Situation
A high pressure system in the Tasman Sea is directing a northerly airstream over SA, ahead of a trough of low pressure approaching from the west late today. The trough is then forecast to move over southern SA during Saturday, and linger through inland parts of SA into Sunday. Another high pressure system is expected to move over waters to the south over the weekend, extending a ridge over southern SA on Sunday, before a second trough moves into the west on Monday and across the south on Tuesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Riddoch Bay Temperature Statistics View More

January Temperature

Mount Gambier Airport (33km)

  • Lowest 1 January, 2026

    6.9 °C

  • Average January

    18.5 °C

  • Highest 7 January, 2026

    41.6 °C

Climate (2021–Present)

Mount Gambier Airport (33km)

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  • Average Low 2021–2026

    8.8 °C

  • Average 2021–2026

    13.6 °C

  • Average High 2021–2026

    20 °C
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