December · Australia
Best time to visit Katoomba in December Weather, crowds & prices
Weather in Katoomba in December
Average temperature 19°C, 60 mm of rain, about 31 days with 6+ hours of sunshine and 64% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
9.5/10
Ranked #1 of 12 months
- Avg temp
- 19°C
- Rainfall
- 60 mm
- Humidity
- 64%
- Days with 6h+ sun
- 31
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
December in Katoomba scores 9.5/10 for nature and wildlife travel - the single best month of the year. Expect around 19°C, 60 mm of rain, and roughly 31 days with 6+ hours of sunshine this month.
Katoomba is the Blue Mountains cliff town-Three Sisters lookouts, misty eucalyptus, and Scenic World rides. Best window: November through March in the Southern Hemisphere.
December in Katoomba tops the year's climate scores
December averages 19°C (66°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 60 mm, so plan one flexible day in three; you still get about 31 days with 6+ hours of sunshine and 14.2 hours of daylight.
On our climate-comfort scale this is the top-ranked month of the year for Katoomba at 9.5/10 — the reference point every other month on this page is measured against.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer, footwear you can get muddy.
Figure on peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Katoomba in December?
- In December, Katoomba averages 19°C, 60 mm of rain, and about 31 days with 6+ hours of sunshine. Its climate-comfort score is 9.5/10.
- Is December a good time to visit Katoomba?
- December earns a 9.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Katoomba in December?
- Expect about 60 mm of rain in December. Average humidity is 64% and there are about 31 days with 6+ hours of sunshine.
Curated in Katoomba
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Katoomba, Australia. Live activities and tours from GetYourGuide, matched to this destination.