May Weather in Uyuni, Bolivia

Last updated: August 21, 2025

May in Uyuni, Bolivia brings a mix of mild temperatures and dry conditions. With a maximum of 20°C (69°F) and an average of 6°C (43°F), visitors can expect cool, pleasant days. Nights can get quite chilly, sometimes dropping to a minimum of -6°C (22°F). Notably, this month sees zero precipitation, making it ideal for exploring the breathtaking landscapes without worrying about rain. With a humidity level of 82%, the air remains crisp and refreshing, enhancing the unique beauty of this high-altitude wonder. Whether you're wandering the stunning salt flats or soaking in the scenery, May offers a captivating experience in Uyuni.

May Temperature in Uyuni

In May, temperatures in Uyuni, Bolivia take a noticeable dip as autumn settles in, marking a significant shift from the warmer months of early summer. The minimum temperature hovers around a brisk -6°C (22°F), while the average drops to 6°C (43°F), providing a stark contrast to the milder temperatures seen in earlier months. The maximum temperature reaches a comfortable 20°C (69°F), but the overall chill in the air is unmistakable. This trend of cooling hints at the approaching winter, as the region transitions from the mildness of spring. Visitors wrapped in layers will find that the clear skies offer stunning views of the iconic salt flats, but preparation for the crisp nights is essential to fully enjoy the beauty of Uyuni's unique landscape.

May Weather in Uyuni: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Uyuni, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Uyuni, May typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec535352484339394147515455
Data source: Temperature data for Uyuni generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Uyuni

May in Uyuni, Bolivia, marks a dramatic shift in the wet season, as the region sees a notable decline in precipitation. With only 1 mm (0.0 in) of rainfall and no recorded rainy days, May stands out as one of the driest months of the year. This stark contrast to earlier months, such as January and February which averaged over 100 mm (4.1 in), highlights the transition into the dryer winter months ahead. Following the light rains of April, which yielded just 11 mm (0.4 in) over three days, May sets a clear precedent for the approaching winter—one characterized by minimal precipitation, as evidenced by the subsequent months of June and July, which also report similar dryness. This trend underscores Uyuni's unique climatic patterns, where a lush early year quickly gives way to a stark, parched landscape.

May Precipitation Trends in Uyuni

The chart displays monthly precipitation patterns in Uyuni, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Uyuni, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec104103741111428111690
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Uyuni

In May, Uyuni, Bolivia experiences a noticeable shift in humidity, with levels dipping to 82% from the higher averages seen in the preceding months. This reduction marks the beginning of a transition towards a drier season, contrasting sharply with the peaks of 89% in March and 88% in February. As winter approaches, the humidity will continue to decline dramatically, plummeting to just 59% by June, highlighting the region's distinct seasonal variation. The gradual decrease from the summer months suggests an evolving climate landscape, making May a pivotal point for those seeking to enjoy Uyuni's breathtaking salt flats under more comfortable conditions.

May Average Humidity in Uyuni

This chart illustrates the average monthly humidity levels in Uyuni, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Uyuni is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%90%87%82%59%47%43%60%67%71%79%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Uyuni

In May, Uyuni, Bolivia, experiences a UV Index of 12, categorized as extreme, with a burn time of just 10 minutes. While this marks a slight decrease from the highest levels seen in the earlier months, it still demands caution, as the sun's intensity remains formidable. Notably, April's UV Index was 15, and the region consistently experiences extreme levels from January to November, highlighting a trend of intense solar exposure throughout much of the year. As the seasons shift and the UV Index gradually lessens, it's essential to stay vigilant and protect your skin, especially when the sun is at its peak. For more insights on UV levels in Uyuni, visit Uyuni UV Index.

Maximum UV Index Levels in Uyuni for May

The chart shows the monthly maximum UV Index (UVI) for Uyuni in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Uyuni typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec19191715129101316191919
Data source: Uyuni May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

May Sunshine in Uyuni

In May, Uyuni, Bolivia, basks in a delightful 338 hours of sunshine, falling in line with the region's generally bright and sunny disposition. Following the peak of March with 347 hours, the transition into May continues a trend of ample sunshine, though slightly less than the highs of the late summer months. This month's sunshine hours, combined with the consistent brightness observed from February through June, offer an inviting backdrop for travelers eager to explore Bolivia's otherworldly landscapes. As days grow longer and warmer, May serves as a perfect bridge, captivating visitors with both its radiant sun and the stunning vistas that define this unique region.

Monthly Sunshine Duration in Uyuni: May Highlighted

The May sunshine duration represents the total number of hours Uyuni experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec294h311h347h335h338h315h331h348h348h376h378h371h
Data source: Uyuni May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Uyuni During May

As May approaches in Uyuni, Bolivia, the likelihood of sunny weather begins to rise significantly, reaching an impressive 68% chance of sunshine. This marks a notable leap from the preceding months, particularly April's 64%, and signals the beginning of a string of increasingly clear days leading into the winter months. The trend continues upward, peaking in July with an outstanding 89% chance of sun. Comparatively, the months before May show much lower chances, indicating a transition towards drier, brighter conditions that visitors can expect during this time of year. Embrace the warmth and radiance of May, as it lays the foundation for a sun-soaked season in Uyuni!

Percentage of Sunny Days in May in Uyuni

The chart illustrates the percentage of sunny days in Uyuni throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Uyuni experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec36%45%35%64%68%74%89%87%70%84%44%23%
Data source: Uyuni May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Uyuni in May

In Uyuni, Bolivia, the daylight duration exhibits a fascinating seasonal rhythm that reflects the region's unique geographic position. As the year begins, daylight peaks at a generous 13 hours in January and November, gradually transitioning into a more moderate 12 hours in February and March. The trend then shifts downward to 11 hours in April and May, creating a brief period of shorter days before the cycle restarts. Notably, June witnesses the least amount of daylight at 10 hours, but by July, the sun begins to regain its prominence, returning to 11 hours. The remaining months, from August through October, establish a stable pattern of 11 to 12 hours until the year concludes with a warm embrace of light once again in December. This cyclical dance of daylight serves as a captivating reminder of nature's rhythms in this enchanting Bolivian locale.

Average Daylight Hours in Uyuni for May

The chart illustrates the variation in daylight duration in Uyuni throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 11m12h 44m12h 10m11h 35m11h 7m10h 53m11h 1m11h 25m11h 58m12h 33m13h 4m13h 20m
Data source: Uyuni daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Uyuni

In May, Uyuni, Bolivia, experiences a moderate average wind speed of 3.3 m/s (7 mph), mirroring the calm breezes of the preceding months. As the dry season unfolds, wind conditions remain relatively stable, with gentle gusts that complement the unique landscapes, making it an ideal time for exploration. Notably, the trend shows a gradual increase in wind speeds as the year progresses, peaking in October at 4.3 m/s (10 mph). This gentle shift underscores the churning power of nature that dances across the vast salt flats, captivating travelers and adventurers alike, while also hinting at the stronger winds on the horizon in the subsequent months.

Average May Wind Speed in Uyuni

The chart displays monthly wind speed patterns in Uyuni, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.33.12.93.23.3 m/s3.73.43.83.74.33.43.2
Data source: Uyuni May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Uyuni Compares to Other Months

Weather in Uyuni varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Uyuni, focusing on differences in temperature, rainfall, humidity, and UV levels.

In May, the weather features a mild temperature range with minimums around -6°C (22°F) and average highs reaching 20°C (69°F), accompanied by low precipitation of just 1 mm over the month, indicating a dry climate. In contrast, January presents a warmer temperature spectrum, with averages peaking at 23°C (73°F) and significant precipitation totaling 104 mm across about 15 days, resulting in higher humidity levels at 87%. This stark difference highlights May's crisp, dry conditions compared to January's wetter, more humid atmosphere. For more detailed information about January weather in Uyuni, you can refer to Uyuni weather in January.

In comparing the weather between May and February, it's clear that February experiences warmer temperatures, with a minimum of 1°C and an average of 12°C, peaking at 24°C. In contrast, May is cooler, with temperatures ranging from a minimum of -6°C to a maximum of 20°C, and an average of 6°C. While May is relatively dry, receiving only 1 mm of precipitation over no days, February is significantly wetter, with 103 mm of rainfall across 16 days. Additionally, humidity levels are slightly higher in February at 88%, compared to 82% in May. For more detailed information on February weather, you can visit Uyuni weather in February.

In comparing the weather between May and March, we can observe notable differences in temperature, precipitation, and humidity. May experiences cooler temperatures, ranging from a minimum of -6°C (22°F) to a maximum of 20°C (69°F), with an average of 6°C (43°F). In contrast, March boasts a more moderate temperature spectrum, with minimums of 0°C (32°F) and maximums reaching 23°C (73°F), averaging 11°C (52°F). Furthermore, precipitation is significantly lower in May, with only 1 mm recorded across no days, while March sees substantial rainfall at 74 mm over 14 days. Despite having slightly higher temperatures, March also has a higher humidity level at 89%, compared to May's 82%. For more details on the conditions in March, you can visit Uyuni weather in March.

In comparing the weather between April and May, we can observe some notable differences. May features a slightly broader temperature range with a minimum of -6°C (22°F), an average of 6°C (43°F), and a maximum of 20°C (69°F). In contrast, April has a higher average temperature of 9°C (49°F) and peaks at 23°C (74°F), although it does experience more precipitation, with 11 mm (0.4 in) falling over three days. Additionally, humidity levels are moderately high in both months, being 82% in May and 87% in April. For those seeking detailed information on April weather, check out Uyuni weather in April.

In comparison, May typically experiences slightly warmer temperatures with an average of 6°C (43°F) and a maximum of 20°C (69°F), while June has a cooler average of 4°C (39°F) and a maximum of 17°C (63°F). Humidity levels also differ, with May being more humid at 82%, compared to June’s lower, more comfortable humidity of 59%. Both months see minimal precipitation, with just 1 mm recorded and no rainy days in either month. For more specific insights about June weather, you can explore Uyuni weather in June.

May and July in Uyuni showcase notable differences in weather patterns. In May, the temperature ranges from a minimum of -6°C (22°F) to a pleasant maximum of 20°C (69°F), with an average of 6°C (43°F). This month enjoys dry conditions, with barely any precipitation and high humidity at 82%. In contrast, July experiences cooler temperatures, with a minimum of -10°C (14°F) and a maximum of only 17°C (63°F), averaging at 4°C (40°F). July sees slightly higher precipitation at 4 mm (0.2 in) over just one day, while humidity drops significantly to 47%. For more details about July weather, visit Uyuni weather in July.

When comparing the weather of May and August, May typically enjoys slightly warmer temperatures, with an average of 6°C (43°F) compared to August’s average of 5°C (41°F). The maximum temperature in May reaches 20°C (69°F), while in August, it peaks at 19°C (67°F). Additionally, May experiences a higher humidity level at 82%, which contributes to its overall milder feel, whereas August sees a significant drop in humidity to 43%. Precipitation is minimal in both months, with May receiving just 1 mm and August slightly more at 2 mm; however, both report no rainy days. For more detailed information on weather conditions in August, visit Uyuni weather in August.

In May, the weather is characterized by cooler temperatures, with a minimum reaching -6°C (22°F) and an average of 6°C (43°F), while the maximum temperature can rise to 20°C (69°F). This month experiences low precipitation, with no rain days and high humidity at 82%. In contrast, September brings slightly warmer conditions, with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 23°C (73°F) and an average of 8°C (48°F). September also sees more precipitation, with 8 mm (0.3 in) falling over one rain day and lower humidity at 60%. For a detailed look at the weather in September, check out Uyuni weather in September.

May and October present distinct weather characteristics in terms of temperature, precipitation, and humidity. In May, temperatures can drop as low as -6°C (22°F), with an average of 6°C (43°F) and a maximum of 20°C (69°F). This month experiences minimal rainfall, with only 1 mm recorded and no rainy days, but it has a higher humidity of 82%. Conversely, October offers slightly milder temperatures, with a minimum of -4°C (24°F), an average of 11°C (52°F), and a maximum of 23°C (74°F). Rainfall increases to 11 mm over two days, accompanied by a lower humidity of 67%. For more detailed information, you can visit Uyuni weather in October.

In May, temperatures in Uyuni range from a chilly -6°C (22°F) at night to a pleasant max of 20°C (69°F) during the day, with an average temperature of 6°C (43°F). The weather is quite dry, experiencing only 1 mm of precipitation over the month and maintaining a relatively high humidity level of 82%. In contrast, November is slightly warmer, with temperatures fluctuating between -4°C (26°F) at night and a daytime high of 25°C (77°F), yielding an average of 12°C (54°F). However, November sees an increase in precipitation, totaling 16 mm over approximately 5 days, and lower humidity at 71%. For a detailed look at November weather in Uyuni, you can visit Uyuni weather in November.

In May, the weather in Uyuni is typically mild, with an average temperature of 6°C (43°F), ranging from a minimum of -6°C (22°F) to a maximum of 20°C (69°F). Precipitation is minimal, with just 1 mm reported over the month, and humidity remains relatively high at 82%. In contrast, December experiences warmer conditions with an average temperature of 13°C (55°F) and highs reaching up to 25°C (78°F), though it comes with significantly more rainfall, totaling 90 mm over about 13 days. Despite the increased precipitation, the humidity is slightly lower at 79%. For more detailed information on December conditions, you can check Uyuni weather in December.

Compare Uyuni's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Uyuni

As May arrives in Uyuni, the weather ushers in a delightful shift characterized by cool daytime temperatures and crisp nights. With an average temperature hovering around 6°C, this month stands out for its relatively mild conditions compared to the sweltering summer months, making it ideal for exploration. Notably, precipitation is virtually non-existent, offering clear skies and sunshine that invite outdoor adventures. The humidity is on the higher side, but this does little to dampen the spirit of wanderers drawn to the stunning landscapes of the salt flats. To gain a fuller understanding of what to expect, check out the detailed insights on Uyuni Climate.