Blue Mountains in Winter
In winter (June, July and August), Blue Mountains sees average daytime highs around 13°C and overnight lows near 3°C, with 145 mm of precipitation over about 21 wet days across the season. It is the coldest season of the year and the driest season of the year.
Across winter, daytime highs hold fairly steady around 13°C. The sky is clear or mostly clear about 46% of the time across winter, and the air most often feels dry.
Winter is Blue Mountains's weakest season of the year to visit on our travel score. For the whole year in context, see Blue Mountains's year-round climate.
- Avg daytime high
- 13°C
- coldest season of the year
- Avg overnight low
- 3°C
- Precipitation
- 145 mm
- 21 wet days
- Avg wind
- 11 km/h
- Travel score
- 3.9
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Blue Mountains in Winter
Across winter, daytime highs hold fairly steady around 13°C.
A typical winter day in Blue Mountains reaches about 13°C and drops to 3°C overnight. The warmest of the three months is August, the coolest July.
How winter really feels in Blue Mountains
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 43 that feel at or below 0°C.
The story in winter is cold — wind chill drags the overnight "feels like" below the raw low.
Blue Mountains weather by month
How the three winter months (June, July and August) 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° | 126 | 15.6 | 14 | 6.0 |
| Feb | 24° / 14° | 146 | 15.4 | 13.3 | 5.9 |
| Mar | 22° / 12° | 115 | 15.2 | 12.3 | 6.0 |
| Apr | 19° / 8° | 56 | 9.1 | 11.2 | 6.3 |
| May | 15° / 6° | 48 | 6.6 | 10.3 | 5.3 |
| Jun | 13° / 4° | 62 | 7.5 | 9.8 | 3.7 |
| Jul | 12° / 3° | 37 | 6.3 | 10 | 3.6 |
| Aug | 14° / 3° | 46 | 6.7 | 10.7 | 4.4 |
| Sep | 17° / 5° | 53 | 8.2 | 11.8 | 5.8 |
| Oct | 20° / 8° | 75 | 10.5 | 12.8 | 6.3 |
| Nov | 22° / 10° | 109 | 13.7 | 13.7 | 6.1 |
| Dec | 24° / 12° | 121 | 13.4 | 14.2 | 6.4 |
Cloud cover in Winter
The sky is clear or mostly clear about 46% of the time across winter.
Chance of precipitation in Winter
Blue Mountains gets around 145 mm of rain and snow over 21 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 11 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 9 h 54 min in early June to 11 h 12 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 3.0 kWh/m².
Hazard calendar for Blue Mountains
None of Blue Mountains's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Blue Mountains's rainy season runs October–March, when most of the year's rain falls.
Is winter a good time to visit Blue Mountains?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a weaker month for outdoor sightseeing in Blue Mountains.
What to pack for Blue Mountains in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Blue Mountains sees daytime highs around 13°C and nights near 3°C. Worth packing: a warm layer. About 21 days see rain.
UV index in Blue Mountains in Winter
Clear-sky midday UV across winter averages around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Blue Mountains 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 Blue Mountains in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Blue Mountains 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 Blue Mountains?
Blue Mountains sits at 33.7°S, 150.3°E, 978 m above sea level, in Australia. The nearest listed city is Katoomba, 2.0 km away.
Topography around Blue Mountains
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Blue Mountains.
Within 3 km, the terrain around Blue Mountains has large variations in elevation — a maximum elevation change of 696 m around an average of 890 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 Blue Mountains is covered by trees (91%) within 3 km, trees (92%) within 16 km, and trees (73%) and grassland (21%) 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 Blue Mountains (-33.7133°, 150.3306°, elevation 978 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.