Cooma weather in December 2026

Expect daytime maximum temperatures of 22°C in Cooma, New South Wales in December based on long-term weather averages. There are 8 hours of sunshine per day on average with 12 days with some rainfall and typically 54 mm of rainfall in the month.

  • 22°C maximum daytime temperature in December in Cooma22
    22°C max day temperature
  • 8 hours of sunshine per day
  • 12 days with some rainfall in December in Cooma12
    12 days with some rainfall
  • 9°C minimum night-time temperature in December in Cooma9
    9°C min night temperature
  • 15 hours of daylight per day in December in Cooma15
    15 hours of daylight per day
  • No heat & humidity in December in Cooma0
    No heat & humidity
  • 54 mm monthly rainfall in December in Cooma54
    54 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in December in Cooma11
    11+ (Extreme) UV index

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The December weather guide for New South Wales (Cooma) 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 Cooma in December?

Daytime temperatures usually reach 26°C in Cooma in December with low heat and humidity, falling to 18°C at night.

How sunny is it in Cooma in December?

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

How warm is the sea around Cooma in December?

The average sea temperature around Cooma in December is 21°C.

Does it rain in Cooma in December?

There are usually 10 days with some rain in Cooma in December and the average monthly rainfall is 86mm.

Cooma December sunrise & sunset times

Browse the sunrise and sunset times for Cooma in December 2026. Select a month to view Cooma sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st December 2026 04:40 19:05
Wednesday, 16th December 2026 04:40 19:17
Thursday, 31st December 2026 04:48 19:24

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