Katoomba in Summer
In summer (December, January and February), Katoomba sees average daytime highs around 25°C and overnight lows near 13°C, with 386 mm of rain over about 44 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 25°C. The sky is clear or mostly clear about 32% of the time across summer, and the air most often feels dry.
Summer is Katoomba's best season of the year to visit on our travel score. For the whole year in context, see Katoomba's year-round climate.
- Avg daytime high
- 25°C
- warmest season of the year
- Avg overnight low
- 13°C
- Rainfall
- 386 mm
- 44 wet days
- Avg wind
- 8 km/h
- Travel score
- 6.1
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Katoomba in Summer
Across summer, daytime highs hold fairly steady around 25°C.
A typical summer day in Katoomba reaches about 25°C and drops to 13°C overnight. The warmest of the three months is January, the coolest December.
How summer really feels in Katoomba
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Katoomba weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 25° / 14° | 125 | 15.3 | 14 | 6.0 |
| Feb | 24° / 14° | 144 | 15.4 | 13.3 | 5.9 |
| Mar | 22° / 12° | 118 | 15.5 | 12.3 | 5.9 |
| Apr | 19° / 8° | 59 | 9.2 | 11.2 | 6.3 |
| May | 15° / 6° | 49 | 6.4 | 10.3 | 5.3 |
| Jun | 12° / 4° | 59 | 7.6 | 9.8 | 3.7 |
| Jul | 12° / 3° | 35 | 6.1 | 10 | 3.6 |
| Aug | 14° / 3° | 47 | 6.4 | 10.7 | 4.4 |
| Sep | 17° / 5° | 52 | 8.3 | 11.8 | 5.9 |
| Oct | 20° / 8° | 76 | 10.6 | 12.8 | 6.3 |
| Nov | 22° / 10° | 111 | 13.9 | 13.7 | 6.1 |
| Dec | 24° / 12° | 117 | 13.3 | 14.2 | 6.4 |
Cloud cover in Summer
The sky is clear or mostly clear about 32% of the time across summer.
Chance of precipitation in Summer
Katoomba gets around 386 mm of rain over 44 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 8 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 06 min in early December to 12 h 48 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.2 kWh/m².
Hazard calendar for Katoomba
In summer, Katoomba overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Katoomba's rainy season runs October–March, when most of the year's rain falls.
Is summer a good time to visit Katoomba?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Katoomba for sightseeing.
What to pack for Katoomba in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Katoomba sees daytime highs around 25°C and nights near 13°C. Pack rain gear and sun protection. Worth having: light clothes. About 44 days see rain.
UV index in Katoomba in Summer
Clear-sky midday UV across summer averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Katoomba peaks around January 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 13 | 12 | 9 | 6 | 4 | 2 | 3 | 4 | 6 | 9 | 10 | 12 |
| Level | Extreme | Extreme | Very high | High | Moderate | Moderate | Moderate | Moderate | High | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 12 | Extreme |
| Mar | 9 | Very high |
| Apr | 6 | High |
| May | 4 | Moderate |
| Jun | 2 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 6 | High |
| Oct | 9 | Very high |
| Nov | 10 | Extreme |
| Dec | 12 | Extreme |
Air quality in Katoomba in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Katoomba is worst in December — around 49 µg/m³ PM2.5 (poor), about 12.5× the cleanest month (July, 4 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 11 | 5 | 6 | 9 | 14 | 8 | 4 | 5 | 6 | 7 | 21 | 49 |
| Level | Good | Good | Good | Good | Moderate | Good | Good | Good | Good | Good | Moderate | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 5 | Good |
| Mar | 6 | Good |
| Apr | 9 | Good |
| May | 14 | Moderate |
| Jun | 8 | Good |
| Jul | 4 | Good |
| Aug | 5 | Good |
| Sep | 6 | Good |
| Oct | 7 | Good |
| Nov | 21 | Moderate |
| Dec | 49 | Poor |
Where is Katoomba?
Katoomba sits at 33.7°S, 150.3°E, 0 m above sea level, in Australia. The nearest listed city is Blue Mountains, 2.0 km away.
Topography around Katoomba
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Katoomba.
Within 3 km, the terrain around Katoomba has large variations in elevation — a maximum elevation change of 724 m around an average of 850 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,002 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,382 m.
The land around Katoomba is covered by trees (91%) within 3 km, trees (90%) within 16 km, and trees (72%) and grassland (22%) within 80 km.
Australia travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type I
- 230 V · 50 Hz
- Prices
- ≈ 90% of US
- price level, 2025
- GDP per capita
- $65,130
- 2025
- Happiness
- 6.9 / 10
- World Happiness, 2025
- Homicide rate
- 0.9
- per 100k, 2023
- Road deaths
- 4.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Katoomba (-33.7198°, 150.3074°, elevation 0 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.