Katoomba weather in December 2025

Expect daytime maximum temperatures of 26°C in Katoomba, New South Wales in December based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 97 mm of rainfall in the month.

  • 26°C maximum daytime temperature in December in Katoomba26
    26°C max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in December in Katoomba11
    11 days with some rainfall
  • 12°C minimum night-time temperature in December in Katoomba12
    12°C min night temperature
  • 14 hours of daylight per day in December in Katoomba14
    14 hours of daylight per day
  • No heat & humidity in December in Katoomba0
    No heat & humidity
  • 97 mm monthly rainfall in December in Katoomba97
    97 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in December in Katoomba11
    11+ (Extreme) UV index

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

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

How sunny is it in Katoomba in December?

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

How warm is the sea around Katoomba in December?

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

Does it rain in Katoomba in December?

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

Katoomba December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 04:41 18:54
Tuesday, 16th December 2025 04:43 19:06
Wednesday, 31st December 2025 04:51 19:12

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