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May Weather in Uyuni Bolivia

Daily high temperatures decrease by 5°F, from 60°F to 55°F, rarely falling below 51°F or exceeding 64°F.

Daily low temperatures decrease by 3°F, from 30°F to 27°F, rarely falling below 23°F or exceeding 35°F.

For reference, on December 8, the hottest day of the year, temperatures in Uyuni typically range from 39°F to 69°F, while on July 19, the coldest day of the year, they range from 26°F to 54°F.

Average High and Low Temperature in May in Uyuni

Average High and Low Temperature in May in UyuniMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313115°F15°F20°F20°F25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°FAprJunMay 160°FMay 160°F30°F30°FMay 3155°FMay 3155°F27°F27°FMay 1158°FMay 1158°F28°F28°FMay 2156°FMay 2156°F27°F27°F
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 May. 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 May in Uyuni

Average Hourly Temperature in May in UyuniMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMAprJunfreezingfreezingvery coldvery coldcoldcool
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.

La Ciudad, Mexico (4,025 miles away) and Cerro La Calera, Mexico (3,538 miles) are the far-away foreign places with temperatures most similar to Uyuni (view comparison).

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The month of May in Uyuni experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 31% to 26%.

The clearest day of the month is May 28, with clear, mostly clear, or partly cloudy conditions 74% of the time.

For reference, on January 14, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 61%, while on August 3, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 80%.

Cloud Cover Categories in May in Uyuni

Cloud Cover Categories in May in UyuniMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJunMay 169%May 169%May 3174%May 3174%May 1172%May 1172%May 2173%May 2173%clearmostly clearpartly cloudymostly cloudyovercast
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 Uyuni, the chance of a wet day over the course of May is essentially constant, remaining around 5% throughout.

For reference, the year's highest daily chance of a wet day is 38% on January 11, and its lowest chance is 4% on June 13.

Over the course of May in Uyuni, the chance of a day with only rain decreases from 4% to 1%, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 2% throughout.

Probability of Precipitation in May in Uyuni

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 May in Uyuni is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.4 inches.

Average Monthly Rainfall in May in Uyuni

Average Monthly Rainfall in May in UyuniMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 in0.0 in0.2 in0.2 in0.4 in0.4 in0.6 in0.6 in0.8 in0.8 in1.0 in1.0 in1.2 in1.2 in1.4 in1.4 inAprJunMay 10.2 inMay 10.2 inMay 310.0 inMay 310.0 inMay 110.1 inMay 110.1 inMay 210.1 inMay 210.1 in
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 May in Uyuni, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 22 minutes, implying an average daily decrease of 44 seconds, and weekly decrease of 5 minutes, 8 seconds.

The shortest day of the month is May 31, with 10 hours, 58 minutes of daylight and the longest day is May 1, with 11 hours, 20 minutes of daylight.

Hours of Daylight and Twilight in May in Uyuni

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 Uyuni is 6:44 AM on May 1 and the latest sunrise is 12 minutes later at 6:55 AM on May 31.

The latest sunset is 6:04 PM on May 1 and the earliest sunset is 10 minutes earlier at 5:54 PM on May 31.

Daylight saving time is not observed in Uyuni during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:44 AM and sets 13 hours, 23 minutes later, at 7:07 PM, while on June 20, the shortest day of the year, it rises at 7:02 AM and sets 10 hours, 53 minutes later, at 5:55 PM.

Sunrise & Sunset with Twilight in May in Uyuni

The solar day over the course of May. 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 the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in May in Uyuni

Solar Elevation and Azimuth in May in UyuniMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMAprJun0010102020203030404050500001010202030303040405060
northeastsouthwest
Solar elevation and azimuth over the course of May 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for May 2024. 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 May in Uyuni

Moon Rise, Set & Phases in May in UyuniMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAprJunApr 82:22 PMApr 82:22 PMApr 237:50 PMApr 237:50 PMMay 711:23 PMMay 711:23 PMMay 239:54 AMMay 239:54 AMJun 68:38 AMJun 68:38 AMJun 219:09 PMJun 219:09 PM6:20 AM6:20 AM6:23 PM6:23 PM5:58 PM5:58 PM7:09 AM7:09 AM6:06 AM6:06 AM5:38 PM5:38 PM5:12 PM5:12 PM6:52 AM6:52 AM7:04 AM7:04 AM6:01 PM6:01 PM5:34 PM5:34 PM7:41 AM7:41 AM
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.
May 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
50%-1:35 PMWSW-6:48 AMS232,225 mi
2
39%12:59 AMESE2:18 PMWSW-7:41 AMN229,891 mi
3
27%2:00 AMESE2:58 PMW-8:31 AMN227,892 mi
4
17%3:01 AME3:36 PMW-9:20 AMN226,430 mi
5
9%4:02 AME4:15 PMW-10:09 AMN225,707 mi
6
3%5:03 AME4:55 PMWNW-10:59 AMN225,881 mi
7
0%6:06 AMENE5:38 PMWNW-11:52 AMN227,028 mi
8
0%7:11 AMENE6:26 PMWNW-12:48 PMN229,113 mi
9
3%8:17 AMENE7:19 PMWNW-1:48 PMN231,984 mi
10
9%9:22 AMENE8:16 PMWNW-2:49 PMN235,391 mi
11
16%10:22 AMENE9:15 PMWNW-3:49 PMN239,025 mi
12
25%11:16 AMENE10:14 PMWNW-4:45 PMN242,569 mi
13
35%12:04 PMENE11:11 PMWNW-5:38 PMN245,739 mi
14
45%12:45 PMENE--6:25 PMN248,318 mi
15
50%-12:05 AMWNW1:21 PMENE7:09 PMN250,159 mi
16
64%-12:56 AMWNW1:54 PMENE7:50 PMN251,192 mi
17
73%-1:45 AMW2:25 PME8:29 PMN251,412 mi
18
81%-2:33 AMW2:55 PME9:07 PMN250,876 mi
19
88%-3:21 AMW3:25 PME9:46 PMN249,690 mi
20
94%-4:10 AMW3:57 PMESE10:27 PMN247,989 mi
21
98%-5:01 AMWSW4:32 PMESE11:12 PMN245,928 mi
22
99%-5:55 AMWSW5:12 PMESE--
23
100%-6:52 AMWSW5:56 PMESE12:00 AMS243,663 mi
24
100%-7:52 AMWSW6:48 PMESE12:52 AMS241,337 mi
25
97%-8:52 AMWSW7:45 PMESE1:49 AMS239,066 mi
26
92%-9:50 AMWSW8:46 PMESE2:48 AMS236,933 mi
27
85%-10:44 AMWSW9:49 PMESE3:47 AMS234,987 mi
28
76%-11:33 AMWSW10:52 PMESE4:44 AMS233,250 mi
29
65%-12:17 PMWSW11:54 PMESE5:37 AMN231,736 mi
30
50%-12:57 PMWSW-6:28 AMN230,468 mi
31
42%12:53 AME1:35 PMW-7:16 AMN229,492 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 Uyuni is essentially constant during May, remaining around 0% throughout.

Humidity Comfort Levels in May in Uyuni

Humidity Comfort Levels in May in UyuniMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AprJunMay 160%May 160%May 10%May 10%May 310%May 310%drydry
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 Uyuni is increasing during May, increasing from 7.4 miles per hour to 8.4 miles per hour over the course of the month.

For reference, on September 16, the windiest day of the year, the daily average wind speed is 9.4 miles per hour, while on April 2, the calmest day of the year, the daily average wind speed is 6.6 miles per hour.

Average Wind Speed in May in Uyuni

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 Uyuni throughout May is predominantly from the west, with a peak proportion of 67% on May 31.

Wind Direction in May in Uyuni

Wind Direction in May in UyuniMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%AprJunwesteastnorth
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).

The growing season in Uyuni typically lasts for 2.4 months (75 days), from around December 12 to around February 24, rarely starting before November 15, or ending after April 13.

The month of May in Uyuni is reliably fully outside of the growing season.

Time Spent in Various Temperature Bands and the Growing Season in May in Uyuni

Time Spent in Various Temperature Bands and the Growing Season in May in UyuniMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJun-0%May 16-0%May 16Apr 1310%Apr 1310%freezingvery coldcoldcoolcomfortable
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 Uyuni are gradually increasing during May, increasing by 46°F, from 1,331°F to 1,377°F, over the course of the month.

Growing Degree Days in May in Uyuni

Growing Degree Days in May in UyuniMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031311,150°F1,150°F1,200°F1,200°F1,250°F1,250°F1,300°F1,300°F1,350°F1,350°F1,400°F1,400°F1,450°F1,450°F1,500°F1,500°FAprJunMay 11,331°FMay 11,331°FMay 311,377°FMay 311,377°FMay 111,351°FMay 111,351°FMay 211,366°FMay 211,366°F
The average growing degree days accumulated over the course of May, 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 Uyuni is gradually decreasing during May, falling by 0.6 kWh, from 6.2 kWh to 5.6 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in May in Uyuni

Average Daily Incident Shortwave Solar Energy in May in UyuniMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhAprJunMay 16.2 kWhMay 16.2 kWhMay 315.6 kWhMay 315.6 kWhMay 116.0 kWhMay 116.0 kWhMay 215.8 kWhMay 215.8 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 Uyuni are -20.460 deg latitude, -66.825 deg longitude, and 12,051 ft elevation.

The topography within 2 miles of Uyuni contains only modest variations in elevation, with a maximum elevation change of 105 feet and an average elevation above sea level of 12,047 feet. Within 10 miles contains only modest variations in elevation (2,992 feet). Within 50 miles contains large variations in elevation (7,139 feet).

The area within 2 miles of Uyuni is covered by bare soil (98%), within 10 miles by bare soil (87%) and sparse vegetation (10%), and within 50 miles by bare soil (64%) and sparse vegetation (18%).

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

Uyuni is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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.

The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Uyuni, according to the International Standard Atmosphere .

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.

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 © OpenStreetMap contributors.

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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