Kathmandu in Summer
In summer (June, July and August), Kathmandu sees average daytime highs around 25°C and overnight lows near 19°C, with 1878 mm of rain over about 89 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 4% of the time across summer, and the air most often feels muggy.
Summer is Kathmandu's weakest season of the year to visit on our travel score. For the whole year in context, see Kathmandu's year-round climate.
- Avg daytime high
- 25°C
- warmest season of the year
- Avg overnight low
- 19°C
- Rainfall
- 1878 mm
- 89 wet days
- Avg wind
- 3 km/h
- Travel score
- 3.5
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Kathmandu in Summer
Across summer, daytime highs hold fairly steady around 25°C.
A typical summer day in Kathmandu reaches about 25°C and drops to 19°C overnight. The warmest of the three months is June, the coolest June.
Kathmandu weather by month
How the three summer 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 | 15° / 5° | 44 | 6.3 | 10.4 | 5.2 |
| Feb | 17° / 7° | 50 | 7.8 | 11 | 6.0 |
| Mar | 21° / 10° | 54 | 9.5 | 11.8 | 6.8 |
| Apr | 24° / 13° | 78 | 12.9 | 12.6 | 6.6 |
| May | 25° / 16° | 198 | 22.4 | 13.4 | 5.1 |
| Jun | 25° / 19° | 457 | 27.4 | 13.7 | 3.9 |
| Jul | 25° / 20° | 784 | 31 | 13.6 | 3.3 |
| Aug | 25° / 20° | 637 | 30.9 | 13 | 3.4 |
| Sep | 25° / 18° | 334 | 28.4 | 12.2 | 3.9 |
| Oct | 23° / 14° | 87 | 14.5 | 11.3 | 6.3 |
| Nov | 20° / 10° | 22 | 6.2 | 10.6 | 7.1 |
| Dec | 16° / 7° | 19 | 3.3 | 10.3 | 6.3 |
Cloud cover in Summer
The sky is clear or mostly clear about 4% of the time across summer.
Chance of precipitation in Summer
Kathmandu gets around 1878 mm of rain over 89 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 3 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 36 min in early June to 12 h 36 min by late August. 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 4.0 kWh/m².
Hazard calendar for Kathmandu
In summer, Kathmandu overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Kathmandu's monsoon runs June–August, when most of the year's rain falls.
Is summer a good time to visit Kathmandu?
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 weaker month for outdoor sightseeing in Kathmandu.
What to pack for Kathmandu in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Kathmandu sees daytime highs around 25°C and nights near 19°C. Pack rain gear. Worth having: light clothes and sun protection. About 89 days see rain.
UV index in Kathmandu in Summer
Clear-sky midday UV across summer averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Kathmandu peaks around July 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 4 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 5 | 9 | 9 | 9 | 9 | 12 | 11 | 10 | 8 | 5 | 4 |
| Level | Moderate | Moderate | Very high | Very high | Very high | Very high | Extreme | Extreme | Very high | Very high | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | Moderate |
| Mar | 9 | Very high |
| Apr | 9 | Very high |
| May | 9 | Very high |
| Jun | 9 | Very high |
| Jul | 12 | Extreme |
| Aug | 11 | Extreme |
| Sep | 10 | Very high |
| Oct | 8 | Very high |
| Nov | 5 | Moderate |
| Dec | 4 | Moderate |
Air quality in Kathmandu 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 Kathmandu is worst in January — around 64 µg/m³ PM2.5 (unhealthy), about 5.6× the cleanest month (July, 11 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Kathmandu's WHO annual average of 37 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 64 | 56 | 44 | 37 | 28 | 20 | 11 | 15 | 21 | 34 | 49 | 63 |
| Level | Unhealthy | Unhealthy | Poor | Poor | Moderate | Moderate | Good | Moderate | Moderate | Moderate | Poor | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 64 | Unhealthy |
| Feb | 56 | Unhealthy |
| Mar | 44 | Poor |
| Apr | 37 | Poor |
| May | 28 | Moderate |
| Jun | 20 | Moderate |
| Jul | 11 | Good |
| Aug | 15 | Moderate |
| Sep | 21 | Moderate |
| Oct | 34 | Moderate |
| Nov | 49 | Poor |
| Dec | 63 | Unhealthy |
Where is Kathmandu?
Kathmandu sits at 27.7°N, 85.3°E, 1,317 m above sea level, in Nepal. The nearest listed city is Patan, 3.0 km away.
Topography around Kathmandu
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Kathmandu.
Within 3 km, the terrain around Kathmandu has only modest variations in elevation — a maximum elevation change of 92 m around an average of 1,302 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,885 m; within 80 km, extreme variations in elevation — a maximum elevation change of 7,243 m.
The land around Kathmandu is covered by artificial surfaces (91%) within 3 km, trees (51%) and cropland (20%) within 16 km, and trees (70%) within 80 km.
Nepal travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / D / M
- 230 V · 50 Hz
- Prices
- ≈ 24% of US
- price level, 2025
- GDP per capita
- $1,536
- 2025
- Happiness
- 5.1 / 10
- World Happiness, 2025
- Safe drinking water
- 16%
- of population, 2024
- Homicide rate
- 2.1
- per 100k, 2020
- Road deaths
- 16.3
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Moderate
- EF EPI 514
- 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 Kathmandu (27.7017°, 85.3206°, elevation 1,317 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.