Umpherstone Bay Weather Forecast

    • 10
    • 17

    Cloudy

    • 6
    • 22

    Partly cloudy

    • 9
    • 31

    Partly cloudy

    • 12
    • 32

    Partly cloudy

    • 16
    • 29

    Cloudy

    • 13
    • 20

    Cloudy

    • 11
    • 19

    Shower

Today 15 Dec Lower South East

Mostly clear. Winds south to southeasterly 15 to 20 km/h.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
South to southeasterly 10 to 15 knots.
Seas
Below 1 metre.
1st Swell
Southwesterly 3 metres, increasing to 4 metres south of Port MacDonnell.
Weather
Cloudy.
Weather Situation
A high pressure system to the south of the state will maintain a ridge across SA as it drifts into the Tasman by Wednesday. A trough of low pressure will briefly enter the far northeast of SA with another trough slowing moving across the south and west on Thursday. A south to southwesterly flow will establish across the coasts on Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Umpherstone Bay Temperature Statistics View More

December Temperature

Mount Gambier Airport (34km)

  • Lowest 7 December, 2025

    4.7 °C
  • Average December

    15.2 °C
  • Highest 12 December, 2025

    32.6 °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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