Mount Gambier weather in December 2025

Expect 22°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Mount Gambier in December based on long-term weather averages. There is usually 8 days with some rainfall and 40 mm of average monthly rainfall in December.

  • 22°C maximum daytime temperature in December in Mount Gambier22
    22°C max day temperature
  • 8 hours of sunshine per day
  • 8 days with some rainfall in December in Mount Gambier8
    8 days with some rainfall
  • 10°C minimum night-time temperature in December in Mount Gambier10
    10°C min night temperature
  • 15 hours of daylight per day in December in Mount Gambier15
    15 hours of daylight per day
  • No heat & humidity in December in Mount Gambier0
    No heat & humidity
  • 40 mm monthly rainfall in December in Mount Gambier40
    40 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in December in Mount Gambier11
    11 (Extreme) UV index

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The December weather guide for South Australia (Mount Gambier) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Mount Gambier in December?

Daytime temperatures usually reach 22°C in Mount Gambier in December, falling to 10°C at night.

How sunny is it in Mount Gambier in December?

There are normally 8 hours of bright sunshine each day in Mount Gambier in December - that's 54% of daylight hours.

Does it rain in Mount Gambier in December?

There are usually 8 days with some rain in Mount Gambier in December and the average monthly rainfall is 40mm.

Mount Gambier December sunrise & sunset times

Browse the sunrise and sunset times for Mount Gambier in December 2025. Select a month to view Mount Gambier sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 04:39 19:13
Tuesday, 16th December 2025 04:39 19:26
Wednesday, 31st December 2025 04:47 19:32

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