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August Weather in Kathmandu Nepal

Daily high temperatures are around 82°F, rarely falling below 78°F or exceeding 86°F.

Daily low temperatures are around 68°F, rarely falling below 66°F or exceeding 71°F.

For reference, on June 12, the hottest day of the year, temperatures in Kathmandu typically range from 67°F to 84°F, while on January 7, the coldest day of the year, they range from 37°F to 64°F.

Average High and Low Temperature in August in Kathmandu

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on August. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in August in Kathmandu

Average Hourly Temperature in August in KathmanduAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMJulSepcomfortablecomfortablewarmcool
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Córdoba, Argentina (10,604 miles away) and Wondai, Australia (5,790 miles) are the far-away foreign places with temperatures most similar to Kathmandu (view comparison).

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© Esri, et al.

Compare Kathmandu to another city:

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The month of August in Kathmandu experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 83% to 73%. The highest chance of overcast or mostly cloudy conditions is 84% on August 5.

The clearest day of the month is August 31, with clear, mostly clear, or partly cloudy conditions 27% of the time.

For reference, on August 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 84%, while on November 5, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 93%.

Cloud Cover Categories in August in Kathmandu

Cloud Cover Categories in August in KathmanduAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JulSepNov 593%Nov 593%Aug 117%Aug 117%Aug 3127%Aug 3127%Aug 1118%Aug 1118%Aug 2121%Aug 2121%clearpartly cloudymostly cloudyovercastmostly clear
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Kathmandu, the chance of a wet day over the course of August is decreasing, starting the month at 60% and ending it at 55%.

For reference, the year's highest daily chance of a wet day is 63% on July 18, and its lowest chance is 1% on November 20.

Probability of Precipitation in August in Kathmandu

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during August in Kathmandu is rapidly decreasing, starting the month at 7.0 inches, when it rarely exceeds 11.5 inches or falls below 2.9 inches, and ending the month at 5.4 inches, when it rarely exceeds 9.9 inches or falls below 1.6 inches.

Average Monthly Rainfall in August in Kathmandu

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of August in Kathmandu, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 43 minutes, implying an average daily decrease of 1 minute, 25 seconds, and weekly decrease of 9 minutes, 56 seconds.

The shortest day of the month is August 31, with 12 hours, 44 minutes of daylight and the longest day is August 1, with 13 hours, 27 minutes of daylight.

Hours of Daylight and Twilight in August in Kathmandu

Hours of Daylight and Twilight in August in KathmanduAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrJulSepnightnightdaydayAug 113 hr, 27 minAug 113 hr, 27 minAug 3112 hr, 44 minAug 3112 hr, 44 min
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month in Kathmandu is 5:26 AM on August 1 and the latest sunrise is 15 minutes later at 5:41 AM on August 31.

The latest sunset is 6:53 PM on August 1 and the earliest sunset is 27 minutes earlier at 6:25 PM on August 31.

Daylight saving time is not observed in Kathmandu during 2022.

For reference, on June 21, the longest day of the year, the Sun rises at 5:08 AM and sets 13 hours, 54 minutes later, at 7:02 PM, while on December 21, the shortest day of the year, it rises at 6:49 AM and sets 10 hours, 23 minutes later, at 5:13 PM.

Sunrise & Sunset with Twilight in August in Kathmandu

Sunrise & Sunset with Twilight in August in KathmanduAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJulSep5:26 AM5:26 AMAug 16:53 PMAug 16:53 PM5:41 AM5:41 AMAug 316:25 PMAug 316:25 PM5:34 AM5:34 AMAug 166:41 PMAug 166:41 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of August. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of key lunar data for August 2022. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in August in Kathmandu

Moon Rise, Set & Phases in August in KathmanduAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMJulSepJul 1412:23 AMJul 1412:23 AMJul 2811:41 PMJul 2811:41 PMAug 127:21 AMAug 127:21 AMAug 272:03 PMAug 272:03 PMSep 103:45 PMSep 103:45 PMSep 263:40 AMSep 263:40 AM6:58 PM6:58 PM5:27 AM5:27 AM4:40 AM4:40 AM7:00 PM7:00 PM6:34 PM6:34 PM5:26 AM5:26 AM5:21 AM5:21 AM6:49 PM6:49 PM6:30 PM6:30 PM6:26 AM6:26 AM6:01 AM6:01 AM6:23 PM6:23 PM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Aug 2022IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
12%8:23 AME9:18 PMW-2:52 PMS245,419 mi
2
20%9:18 AME9:48 PMW-3:34 PMS242,999 mi
3
29%10:14 AME10:19 PMW-4:17 PMS240,272 mi
4
39%11:11 AME10:51 PMWSW-5:02 PMS237,289 mi
5
50%12:12 PMESE11:27 PMWSW-5:49 PMS234,154 mi
6
62%1:16 PMESE--6:42 PMS231,027 mi
7
73%-12:09 AMWSW2:23 PMESE7:40 PMS228,133 mi
8
83%-12:58 AMWSW3:32 PMESE8:44 PMS225,746 mi
9
92%-1:57 AMWSW4:39 PMESE9:51 PMS224,151 mi
10
97%-3:03 AMWSW5:40 PMESE10:57 PMS223,585 mi
11
99%-4:14 AMWSW6:34 PMESE--
12
100%-5:26 AMWSW7:20 PMESE12:00 AMS224,175 mi
13
99%-6:36 AMWSW8:00 PMESE12:58 AMS225,902 mi
14
96%-7:42 AMW8:35 PME1:50 AMS228,609 mi
15
89%-8:44 AMW9:08 PME2:39 AMS232,030 mi
16
81%-9:44 AMW9:40 PME3:25 AMS235,843 mi
17
72%-10:43 AMWNW10:13 PMENE4:09 AMS239,716 mi
18
62%-11:40 AMWNW10:47 PMENE4:54 AMS243,349 mi
19
50%-12:37 PMWNW11:24 PMENE5:40 AMS246,499 mi
20
42%-1:34 PMWNW-6:27 AMS248,995 mi
21
32%12:05 AMENE2:30 PMWNW-7:16 AMS250,737 mi
22
24%12:50 AMENE3:23 PMWNW-8:06 AMS251,695 mi
23
16%1:39 AMENE4:13 PMWNW-8:57 AMS251,901 mi
24
9%2:33 AMENE4:58 PMWNW-9:47 AMS251,437 mi
25
4%3:28 AMENE5:39 PMWNW-10:36 AMS250,415 mi
26
1%4:25 AMENE6:16 PMWNW-11:23 AMS248,960 mi
27
0%5:21 AMENE6:49 PMWNW-12:08 PMS247,192 mi
28
1%6:17 AMENE7:21 PMW-12:51 PMS245,212 mi
29
4%7:13 AME7:51 PMW-1:34 PMS243,097 mi
30
9%8:09 AME8:21 PMW-2:16 PMS240,897 mi
31
16%9:06 AME8:53 PMW-3:00 PMS238,643 mi

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Kathmandu is decreasing during August, falling from 97% to 91% over the course of the month.

The highest chance of a muggy day during August is 97% on August 2.

For reference, on August 2, the muggiest day of the year, there are muggy conditions 97% of the time, while on November 27, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in August in Kathmandu

Humidity Comfort Levels in August in KathmanduAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%JulSepAug 297%Aug 297%Aug 3191%Aug 3191%Aug 1197%Aug 1197%Aug 2196%Aug 2196%oppressiveoppressivemuggymuggyhumidhumiddrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Kathmandu is gradually decreasing during August, decreasing from 4.8 miles per hour to 4.3 miles per hour over the course of the month.

For reference, on April 13, the windiest day of the year, the daily average wind speed is 6.2 miles per hour, while on December 2, the calmest day of the year, the daily average wind speed is 3.7 miles per hour.

Average Wind Speed in August in Kathmandu

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Kathmandu throughout August is predominantly from the south, with a peak proportion of 70% on August 1.

Wind Direction in August in Kathmandu

Wind Direction in August in KathmanduAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%JulSepsoutheastnorthwest
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

While it does not do so every year, freezing temperatures are seen in Kathmandu over some winters. The day least likely to be in the growing season is January 10, with a 74% chance.

Time Spent in Various Temperature Bands and the Growing Season in August in Kathmandu

Time Spent in Various Temperature Bands and the Growing Season in August in Kathmandugrowing seasonAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JulSep100%Aug 16100%Aug 16Jul 24100%Jul 24100%coolcomfortablewarmhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Kathmandu are rapidly increasing during August, increasing by 724°F, from 3,424°F to 4,147°F, over the course of the month.

Growing Degree Days in August in Kathmandu

The average growing degree days accumulated over the course of August, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Kathmandu is essentially constant during August, remaining within 0.2 kWh of 5.4 kWh throughout.

Average Daily Incident Shortwave Solar Energy in August in Kathmandu

Average Daily Incident Shortwave Solar Energy in August in KathmanduAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhJulSepAug 15.5 kWhAug 15.5 kWhAug 315.2 kWhAug 315.2 kWhAug 165.4 kWhAug 165.4 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Kathmandu are 27.702 deg latitude, 85.321 deg longitude, and 4,252 ft elevation.

The topography within 2 miles of Kathmandu contains only modest variations in elevation, with a maximum elevation change of 230 feet and an average elevation above sea level of 4,291 feet. Within 10 miles contains only modest variations in elevation (6,155 feet). Within 50 miles also contains extreme variations in elevation (24,052 feet).

The area within 2 miles of Kathmandu is covered by artificial surfaces (57%) and cropland (41%), within 10 miles by cropland (42%) and trees (36%), and within 50 miles by trees (50%) and cropland (29%).

This report illustrates the typical weather in Kathmandu, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There is only a single weather station, Tribhuvan International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Kathmandu.

At a distance of 4 kilometers from Kathmandu, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

The station records are corrected for the elevation difference between the station and Kathmandu according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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