Blue Mountains in Fall
In fall (March, April and May), Blue Mountains sees average daytime highs around 19°C and overnight lows near 9°C, with 219 mm of rain over about 31 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 23°C in early March to 14°C by late May. The sky is clear or mostly clear about 38% of the time across fall, and the air most often feels dry.
Fall is Blue Mountains's 3rd-best season to visit on our travel score. For the whole year in context, see Blue Mountains's year-round climate.
- Avg daytime high
- 19°C
- 3rd-warmest season
- Avg overnight low
- 9°C
- Rainfall
- 219 mm
- 31 wet days
- Avg wind
- 8 km/h
- Travel score
- 5.9
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Blue Mountains in Fall
Over the season highs ease from about 23°C in early March to 14°C by late May.
A typical fall day in Blue Mountains reaches about 19°C and drops to 9°C overnight. The warmest of the three months is March, the coolest May.
How fall really feels in Blue Mountains
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Blue Mountains weather by month
How the three fall months (March, April and May) 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 Fall
The sky is clear or mostly clear about 38% of the time across fall.
Chance of precipitation in Fall
Blue Mountains gets around 219 mm of rain over 31 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 8 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 48 min in early March to 9 h 54 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 3.8 kWh/m².
Hazard calendar for Blue Mountains
In fall, Blue Mountains overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Blue Mountains's rainy season runs October–March, when most of the year's rain falls.
Is fall a good time to visit Blue Mountains?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Blue Mountains for sightseeing.
What to pack for Blue Mountains in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Blue Mountains sees daytime highs around 19°C and nights near 9°C. Pack rain gear. Worth having: light clothes, a warm layer and sun protection. About 31 days see rain.
UV index in Blue Mountains in Fall
Clear-sky midday UV across fall averages around 6 — 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 Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall 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.