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Average Weather at El Alto International Airport Bolivia

The climate at El Alto International Airport is cool and mostly cloudy. Over the course of the year, the temperature typically varies from 28°F to 60°F and is rarely below 23°F or above 65°F.

Based on the tourism score, the best times of year to visit El Alto International Airport for warm-weather activities are for the entire month of May and from late August to early December.

Climate Summary

coolJanFebMarAprMayJunJulAugSepOctNovDecNowNow65%65%14%14%overcastclearprecipitation: 3.5 inprecipitation: 3.5 in0.1 in0.1 inmuggy: 0%muggy: 0%drydrytourism score: 2.1tourism score: 2.11.01.0
Click on each chart for more information.

Temperature

The temperature at El Alto International Airport varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.

Average High and Low Temperature

Average High and Low Temperature at El Alto International AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJul 2256°FJul 2256°FNov 1560°FNov 1560°F28°F28°F38°F38°FOct 1159°FOct 1159°FJun 1056°FJun 1056°F36°F36°F40°F40°F29°F29°FNowNow
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 entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature

Average Hourly Temperature at El Alto International AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldvery coldcoldcoolcool
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.

Cerro La Calera, Mexico (3,274 miles away) is the far-away foreign place with temperatures most similar to El Alto International Airport (view comparison).

Clouds

At El Alto International Airport, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.

The clearer part of the year at El Alto International Airport begins around April 25 and lasts for 5.0 months, ending around September 24. On July 22, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 65% of the time, and overcast or mostly cloudy 35% of the time.

The cloudier part of the year begins around September 24 and lasts for 7.0 months, ending around April 25. On January 13, the cloudiest day of the year, the sky is overcast or mostly cloudy 86% of the time, and clear, mostly clear, or partly cloudy 14% of the time.

Cloud Cover Categories

Cloud Cover Categories at El Alto International AirportclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2265%Jul 2265%Jan 1314%Jan 1314%Apr 2539%Apr 2539%Sep 2439%Sep 2439%NowNowclearovercastmostly cloudypartly cloudymostly 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.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at El Alto International Airport varies significantly throughout the year.

The wetter season lasts 3.5 months, from December 9 to March 26, with a greater than 26% chance of a given day being a wet day. The chance of a wet day peaks at 50% on January 9.

The drier season lasts 8.5 months, from March 26 to December 9. The smallest chance of a wet day is 2% on July 21.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 50% on January 9.

Daily Chance of Precipitation

Daily Chance of Precipitation at El Alto International AirportwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 950%Jan 950%Jul 212%Jul 212%Jan 144%Jan 144%Dec 926%Dec 926%Mar 2626%Mar 2626%rain
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 months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. El Alto International Airport experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 7.4 months, from September 15 to April 26, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around January 17, with an average total accumulation of 3.5 inches.

The rainless period of the year lasts for 4.6 months, from April 26 to September 15. The least rain falls around June 25, with an average total accumulation of 0.1 inches.

Average Monthly Rainfall

Average Monthly Rainfall at El Alto International AirportrainrainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 inJan 173.5 inJan 173.5 inJun 250.1 inJun 250.1 inSep 150.5 inSep 150.5 inApr 260.5 inApr 260.5 inNowNow
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 liquid-equivalent snowfall.

Snowfall

The sliding 31-day liquid-equivalent quantity of snowfall at El Alto International Airport does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall at El Alto International AirportJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 in3.5 in3.5 inAug 20.1 inAug 20.1 inApr 10.0 inApr 10.0 in
The average liquid-equivalent snowfall (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 rainfall.

Sun

The length of the day at El Alto International Airport varies over the course of the year. In 2021, the shortest day is June 20, with 11 hours, 9 minutes of daylight; the longest day is December 21, with 13 hours, 7 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight at El Alto International AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minSep 2212 hr, 7 minSep 2213 hr, 7 minDec 2113 hr, 7 minDec 2112 hr, 7 minMar 2012 hr, 7 minMar 2011 hr, 9 minJun 2011 hr, 9 minJun 20daydaynightNowNow
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 is at 5:50 AM on November 23, and the latest sunrise is 1 hour, 12 minutes later at 7:02 AM on July 7. The earliest sunset is at 6:06 PM on June 2, and the latest sunset is 1 hour, 6 minutes later at 7:12 PM on January 19.

Daylight saving time (DST) is not observed at El Alto International Airport during 2021.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight at El Alto International AirportJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMNov 235:50 AMNov 235:50 AM7:12 PMJan 197:12 PMJan 19Jun 26:06 PMJun 26:06 PM7:02 AMJul 77:02 AMJul 7daySolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2021. 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.

Moon

The figure below presents a compact representation of key lunar data for 2021. 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.

Moon Rise, Set & Phases

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.

Humidity

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 perceived humidity level at El Alto International Airport, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

Humidity Comfort Levels

Humidity Comfort Levels at El Alto International AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 30%Jul 30%NowNowdrydry
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.

Wind

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 at El Alto International Airport experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.6 months, from August 20 to April 7, with average wind speeds of more than 6.9 miles per hour. The windiest day of the year is January 1, with an average hourly wind speed of 8.0 miles per hour.

The calmer time of year lasts for 4.4 months, from April 7 to August 20. The calmest day of the year is May 18, with an average hourly wind speed of 5.9 miles per hour.

Average Wind Speed

Average Wind Speed at El Alto International AirportwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphJan 18.0 mphJan 18.0 mphMay 185.9 mphMay 185.9 mphAug 206.9 mphAug 206.9 mphApr 76.9 mphApr 76.9 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction at El Alto International Airport is from the north throughout the year.

Wind Direction

Wind Direction at El Alto International AirportJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestnortheast
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).

Best Time of Year to Visit

To characterize how pleasant the weather is at El Alto International Airport throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit El Alto International Airport for general outdoor tourist activities are for the entire month of May and from late August to early December, with a peak score in the first week of November.

Tourism Score

Tourism Score at El Alto International Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810102.12.11.01.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature tourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Beach/Pool Score

Beach/Pool Score at El Alto International AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810100.00.00.00.0NowNowprecipitationprecipitationcloudsclouds
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Growing Season

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).

The growing season at El Alto International Airport typically lasts for 5.8 months (175 days), from around October 29 to around April 22, rarely starting before September 21 or after November 27, and rarely ending before March 30 or after May 12.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season at El Alto International AirportJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Oct 2950%Oct 2950%Apr 2250%Apr 2250%Nov 2790%Nov 2790%Mar 3090%Mar 3090%Sep 2110%Sep 2110%May 1210%May 1210%0%Jul 130%Jul 13Mar 198%Mar 198%NowNowvery coldcoldcoolfreezing
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.

Based on growing degree days alone, the first spring blooms at El Alto International Airport should appear around September 8, only rarely appearing before August 19 or after September 27.

Growing Degree Days

Growing Degree Days at El Alto International AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F100°F100°F200°F200°F300°F300°F400°F400°F500°F500°F600°F600°F700°F700°FSep 890°FSep 890°FJun 30590°FJun 30590°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 experiences some seasonal variation over the course of the year.

The brighter period of the year lasts for 1.9 months, from October 6 to December 4, with an average daily incident shortwave energy per square meter above 6.7 kWh. The brightest day of the year is November 9, with an average of 7.0 kWh.

The darker period of the year lasts for 2.0 months, from May 18 to July 18, with an average daily incident shortwave energy per square meter below 5.6 kWh. The darkest day of the year is June 20, with an average of 5.3 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy at El Alto International AirportbrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWh10 kWh10 kWhNov 97.0 kWhNov 97.0 kWhJun 205.3 kWhJun 205.3 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of El Alto International Airport are -16.513 deg latitude, -68.192 deg longitude, and 13,241 ft elevation.

The topography within 2 miles of El Alto International Airport contains only modest variations in elevation, with a maximum elevation change of 397 feet and an average elevation above sea level of 13,260 feet. Within 10 miles contains only modest variations in elevation (5,561 feet). Within 50 miles also contains extreme variations in elevation (18,832 feet).

The area within 2 miles of El Alto International Airport is covered by artificial surfaces (100%), within 10 miles by artificial surfaces (38%) and grassland (21%), and within 50 miles by shrubs (25%) and grassland (25%).

Data Sources

This report illustrates the typical weather at El Alto International Airport, 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

El Alto International Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

There are no other weather stations in our network within 200 kilometers of this location. Consequently, in the case of missing or erroneous measurements from this station, we fall back on NASA's MERRA-2 modern-era reanalysis , adjusted according to typical seasonal and diurnal differences between this station and the wide-area MERRA-2 reconstructed values.

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.