Racecourse Bay Weather Forecast

    • 11
    • 30

    Sunny

    • 15
    • 37

    Partly cloudy

    • 14
    • 19

    Windy

    • 12
    • 18

    Windy

    • 11
    • 21

    Windy

    • 13
    • 24

    Partly cloudy

    • 14
    • 24

    Partly cloudy

Today 28 Dec Lower South East

Sunny. Winds north to northeasterly 15 to 20 km/h shifting south to southeasterly 15 to 25 km/h in the afternoon. Daytime maximum temperatures 31 to 36.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
East to northeasterly 10 to 15 knots becoming variable about 10 knots in the middle of the day then becoming east to southeasterly 10 to 15 knots in the evening.
Seas
Around 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the morning, then increasing to 1.5 to 2 metres by early evening.
Weather
Sunny.
Weather Situation
A high pressure system centred near Tasmania maintains a broad ridge over most of South Australia, with a trough crossing the Bight. The high centre moves eastward into the Tasman Sea today and Monday while the trough builds over central SA and slowly moves eastward. The trough moves into the northeast of SA on Wednesday while a high passes south of the Bight.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Racecourse Bay Temperature Statistics View More

December Temperature

Mount Gambier Airport (34km)

  • Lowest 7 December, 2025

    4.7 °C

  • Average December

    15.6 °C

  • Highest 18 December, 2025

    38.9 °C

Climate (2020–Present)

Mount Gambier Airport (34km)

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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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