Riddoch Bay Weather Forecast

    • 9
    • 13

    Showers

    • 8
    • 12

    Shower or two

    • 7
    • 13

    Shower or two

    • 4
    • 14

    Cloudy

    • 3
    • 14

    Cloudy

    • 5
    • 14

    Possible shower

    • 5
    • 14

    Shower or two

Today 28 Jul Mount Gambier

Cloudy. Very high chance of showers, with possible small hail in the afternoon and evening. Winds westerly 20 to 25 km/h increasing to 25 to 35 km/h in the middle of the day then tending southwesterly 20 to 25 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 south of Port MacDonnell during the afternoon and evening. Winds tending southwesterly in the evening.
Seas
2 to 3 metres, increasing to 3 to 4 metres south of Port MacDonnell during the afternoon.
1st Swell
Westerly 3 to 4 metres, increasing to 4 to 6 metres during the afternoon, then tending southwesterly 6 to 7 metres later in the evening.
Weather
Cloudy. 95% chance of showers. The chance of a thunderstorm south of Port MacDonnell in the late afternoon and evening. Possible small hail.
Weather Situation
A trough will continue to move over southeastern parts of the state today. A cold front will clip the far southeast this afternoon and evening before a high pressure system moves over the Bight from Wednesday. The high will extend a ridge across the state, as it slowly moves east into NSW by Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Riddoch Bay Temperature Statistics View More

July Temperature

Mount Gambier Airport (33km)

  • Lowest 7 July, 2026

    -1.1 °C

  • Average July

    9.5 °C

  • Highest 1 July, 2026

    16.7 °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

    20.1 °C
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