Riddoch Bay Weather Forecast

    • 13
    • 18

    Cloudy

    • 10
    • 17

    Cloudy

    • 11
    • 19

    Partly cloudy

    • 10
    • 23

    Mostly sunny

    • 10
    • 28

    Sunny

    • 15
    • 30

    Partly cloudy

    • 16
    • 28

    Possible shower

Today 24 Dec Mount Gambier

Cloudy. Slight chance of a shower, most likely in the morning and early afternoon. Winds westerly 15 to 25 km/h tending southwesterly 25 to 30 km/h in the morning then tending southerly 15 to 25 km/h in the evening.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
West to southwesterly 15 to 20 knots, reaching up to 25 knots south of Port MacDonnell during the morning and early afternoon. Winds tending south to southwesterly during the morning and early afternoon.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres offshore.
1st Swell
Southwesterly 4 metres.
Weather
Cloudy.
Weather Situation
A ridge of high pressure persists across South Australia this week as the high centre moves to the south of the Bight on Thursday, continuing eastwards on Friday, to be in the Tasman Sea on Saturday. A trough embedded in the southwesterly flow around the ridge clips the southeast this morning.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Riddoch Bay Temperature Statistics View More

December Temperature

Mount Gambier Airport (33km)

  • Lowest 7 December, 2025

    4.7 °C

  • Average December

    15.8 °C

  • Highest 18 December, 2025

    38.9 °C

Climate (2020–Present)

Mount Gambier Airport (33km)

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  • Average Low 2020–2025

    8.8 °C

  • Average 2020–2025

    13.6 °C

  • Average High 2020–2025

    19.9 °C
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