Katoomba Weather in December
Katoomba in December sees high temperatures, with highs around 25°C (77°F) and overnight lows of 12°C (54°F). Rainfall is fairly high at around 121 mm (4.8 in) on average, so pack waterproofs just in case.
Rainfall in Katoomba in December
This month experiences about 11 days of rain according to historical data, averaging 121 mm (4.8 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Katoomba in December
Daytime temperatures in Katoomba reach 25°C (77°F) in December, dropping to 12°C (54°F) at night. Experience the summer season in December. Conditions stay fairly consistent through the month, making it easier to plan what to wear. At 12°C (54°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.Should you favor a climate that's both dry and comfortably warm, April and October typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Australia, check out our Katoomba's climate page.
Katoomba Temperature in December
Min Temperature
12°C (54°F)
Max Temperature
25°C (77°F)
Chance of Rain
37%
Precipitation
121 mm (4.8 in)
Rainy days
11 days
Daily Historical Temperatures
47-year average (1976-2025)
Based on our historical records, temperatures in Katoomba typically stay consistent throughout December, with daily highs averaging around 25°C (77°F). Nights are cool, with lows typically ranging from 12°C (54°F) to 15°C (59°F).
Average temperatures in December
Daily Historical Precipitation
47-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Katoomba in December
Browse day-by-day weather records for Katoomba spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Katoomba historical weather extremes in December
Our historical data for Katoomba spans 1990 to 2025, revealing these weather extremes.
- The hottest December day on record in Katoomba reached 41°C (106°F) (December 6, 2025).
- The coldest night in December in Katoomba was on December 5, 2011, with a minimum of 3°C (37°F).
- The wettest December day on record brought 70 mm (2.8 in) of precipitation to Katoomba (December 13, 1991).
Best Places in Australia in December
Find out more about the weather in Australia and which places have the best travel conditions in this month. See all of Australia in December →
perfect weather
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tolerable
unpleasant
poor
What to Wear in Katoomba in December
Warm but pleasant conditions in Katoomba in December. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags.What To Do in Katoomba in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Australia, check out our Katoomba's climate page.
See the full Katoomba climate overview or explore weather in Australia.
