Last updated: August 21, 2025
December in Uyuni, Bolivia presents a unique climatic experience characterized by a maximum temperature of 25°C (78°F) and an average temperature of 13°C (55°F). As summer approaches in the Southern Hemisphere, visitors can expect a minimum temperature dipping to -3°C (27°F) during colder nights. The month also sees significant precipitation, totaling 90 mm (3.5 in) over 13 days, contributing to a humidity level of 79%. This blend of conditions results in a vibrant, albeit moist, atmosphere, perfect for those looking to explore the breathtaking salt flats and stunning landscapes that Uyuni has to offer.
In December, Uyuni experiences a mild transition into the summer season, showcasing a remarkable range of temperatures. With minimums around -3°C (27°F) and maximums peaking at 25°C (78°F), the climate becomes increasingly inviting. The average temperature hovers at a comfortable 13°C (55°F), making it an ideal time for outdoor exploration. This month marks the end of the colder periods, as the weather gradually warms up compared to the chillier months of April and May, which often see frigid lows. Visitors to Uyuni in December can enjoy pleasantly warm days while still experiencing the crispness of the high-altitude air at night, creating a delightful balance perfect for adventurers and nature enthusiasts alike.
In December, Uyuni experiences a significant uptick in precipitation, recording 90 mm (3.5 in) over the month, which is indicative of the wet season leading into summer in Bolivia. This is in contrast to the sparse rainfall seen in the cold winter months of May through August, where precipitation is minimal, totaling only 8 mm across those months. December marks a return to wetter conditions, with rainfall occurring on 13 days, a notable increase from the drier winter pattern. Following the gradual climb in precipitation since November, which saw 16 mm over 5 days, the month ends the year on a relatively soggy note, highlighting the shift in seasonal weather patterns that characterize Uyuni's unique climate.
In December, Uyuni, Bolivia experiences a noticeable shift in humidity as it begins to transition from the drier months of late fall to the more humid conditions of summer. With a humidity level of 79%, this month marks a clear increase from the drier depths of July and August, which recorded lows of just 47% and 43% respectively. Following the consistent rise from November's 71%, December's figures are part of a broader trend where humidity gradually climbs throughout the warm season, peaking at 89% in March. This pattern reflects Uyuni's unique altitude and geography, resulting in humidity levels that oscillate dramatically throughout the year, creating a distinctive climate that both locals and travelers appreciate.
In December, Uyuni, Bolivia, experiences an extreme UV Index of 19, mirroring the intense sun exposure seen throughout much of the year. Remarkably, this month joins a consistent pattern with January, February, October, and November all showcasing the same high index, with a burn time of just 10 minutes—a stark reminder of the need for effective sun protection. While March to May see slightly lower values, the overall trend remains clear: visitors and locals alike must remain vigilant against UV radiation. As the year unfolds, Uyuni stands out with its unyielding sun intensity, making it essential to stay informed. For more detailed information on UV levels in the area, check out Uyuni UV Index.
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In December, Uyuni basks in a delightful 371 hours of sunshine, wrapping up the year on a bright note. As the days grow shorter, this enchanting Bolivian town continues to enjoy plentiful rays, contributing to a trend of increasing sunlight that begins with the onset of spring. Following the previous months, which see a gradual rise in sunlight, December maintains a close resemblance to the sunny November, with only a slight dip. The increase from earlier months like October (376 hours) and an impressive altitude from the quieter winter months showcases Uyuni's appeal as a year-round destination for travelers seeking to immerse themselves in the beauty of the world's largest salt flat, all while soaking up the sun's invigorating warmth.
In Uyuni, Bolivia, the likelihood of sunny weather takes a notable dip in December, with only a 23% chance of sun. This stark contrast is part of a broader seasonal trend; as the year progresses, the probability of sunny days tends to rise dramatically, peaking in the winter months of July and August, where it surpasses 80%. The transition from the wet season, characterized by lower sunshine rates, to the dry months highlights a shift that begins as early as April and culminates in summer. Thus, while December may bring fewer sunny spells, the months that follow invite travelers and sun-seekers to enjoy the brilliance of Uyuni's skies.
In Uyuni, Bolivia, December marks the return of longer daylight hours, with the sun gracing the sky for approximately 13 hours each day. Throughout the year, daylight duration exhibits a dynamic rhythm, beginning at its peak in January, where it also reaches 13 hours. As the months progress into late winter and early spring, there is a gradual decline to about 10 hours in June. However, the trend shifts again as spring advances, showing a steady increase back to 12 hours in October, and returning to that cheerful 13-hour mark by December. This cyclical pattern not only shapes the stunning landscapes and rich cultural experiences of Uyuni but also invites locals and visitors alike to embrace the vibrant life that flourishes under the sun.
As December wraps Uyuni, Bolivia, in its gentle embrace, the average wind speed settles at a breezy 3.2 m/s (7 mph). This month echoes a pattern seen throughout the year, where the winds generally maintain a steady presence, peaking in October at 4.3 m/s (10 mph). The trend reveals a subtle increase in wind speeds during the mid-year months, particularly from June to August, hinting at a more vigorous gustiness as the dry season progresses. By the time December arrives, the winds soften slightly, offering a mild and refreshing breeze that complements the stark beauty of Uyuni's vast salt flats, making it an ideal time for exploration and reflection.
Weather in Uyuni varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Uyuni, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January exhibit some notable differences in weather conditions. In December, temperatures range from a minimum of -3°C (27°F) to a maximum of 25°C (78°F), with an average of 13°C (55°F). This month sees about 90 mm (3.5 in) of precipitation over approximately 13 days, with humidity levels around 79%. In contrast, January experiences slightly warmer temperatures, with a minimum of 0°C (32°F), an average of 11°C (53°F), and a maximum of 23°C (73°F). The precipitation increases to 104 mm (4.1 in) over 15 days, and humidity rises to 87%. For more details, you can check Uyuni weather in January.
In December, temperatures in Uyuni range from a chilly minimum of -3°C (27°F) to a warm maximum of 25°C (78°F), with an average temperature of about 13°C (55°F). The month sees approximately 90 mm (3.5 in) of precipitation over 13 days, contributing to a humidity level of 79%. In contrast, February experiences slightly milder conditions, with minimum temperatures rising to 1°C (33°F) and a maximum of 24°C (76°F). The average temperature remains close at 12°C (53°F), but February records higher precipitation at 103 mm (4.1 in) spread across 16 days, leading to increased humidity levels of 88%. For more detailed insights, you can check Uyuni weather in February.
December and March present distinct weather patterns, marking a transition from the warmth of late spring to the early signs of winter. In December, temperatures fluctuate between a minimum of -3°C (27°F) and a maximum of 25°C (78°F), with an average of 13°C (55°F). This month experiences 90 mm (3.5 in) of precipitation over 13 days, alongside a humidity level of 79%. In contrast, March features milder temperatures, ranging from a minimum of 0°C (32°F) to a maximum of 23°C (73°F), with an average of 11°C (52°F). Although it has slightly less precipitation at 74 mm (2.9 in) across 14 days, March sees a higher humidity level of 89%. For a more detailed look at March weather, you can visit Uyuni weather in March.
In December, the weather tends to be warmer, with average temperatures ranging from a minimum of -3°C (27°F) to a maximum of 25°C (78°F), while April experiences slightly cooler conditions, with temperatures ranging from -5°C (24°F) to a maximum of 23°C (74°F). December also brings more precipitation, averaging 90 mm (3.5 in) over 13 days, compared to the much drier April, which sees only 11 mm (0.4 in) over just 3 days. Additionally, humidity levels are higher in April at 87%, compared to December's 79%, contributing to a different overall feel to the weather during these months. For a detailed look at April's climate, check out Uyuni weather in April.
When comparing the weather in December and May, notable differences emerge. December experiences a wider temperature range, with minimums reaching -3°C (27°F) and maximums peaking at 25°C (78°F), while May has a cooler temperature range from -6°C (22°F) to a maximum of 20°C (69°F). December also tends to be wetter, with an average precipitation of 90 mm (3.5 in) over 13 days, whereas May is remarkably dry, reporting only 1 mm (0.0 in) of precipitation and no rainy days at all. Humidity levels are relatively similar, with December at 79% and May slightly higher at 82%. For more detailed information, check Uyuni weather in May.
The contrast between December and June weather is quite striking. In December, temperatures range from a chilly minimum of -3°C (27°F) to a warm maximum of 25°C (78°F), with an average of 13°C (55°F). This month also sees a considerable amount of precipitation, totaling 90 mm (3.5 in) over 13 days, and humidity levels are relatively high at 79%. In contrast, June experiences much cooler conditions, with a minimum temperature of -8°C (17°F) and a maximum of only 17°C (63°F), resulting in a significantly lower average of 4°C (39°F). Remarkably, June has almost no precipitation, with only 1 mm (0.0 in) recorded and no rainy days, and the humidity drops to 59%. For more detailed information, you can check Uyuni weather in June.
December typically brings milder weather compared to July, with average temperatures ranging from a minimum of -3°C (27°F) to a comfortable maximum of 25°C (78°F). The month often sees significant precipitation, totaling around 90 mm (3.5 in) over approximately 13 days, leading to higher humidity levels at 79%. In contrast, July is characterized by much cooler conditions, with temperatures dropping to a low of -10°C (14°F) and peaking at just 17°C (63°F). Rainfall is minimal, with only 4 mm (0.2 in) recorded over a single day, resulting in lower humidity at 47%. For more specific details about July weather, you can check Uyuni weather in July.
When comparing the weather in December and August, there are significant differences in both temperature and precipitation. December tends to be much warmer, with average temperatures hovering around 13°C (55°F) and reaching a maximum of 25°C (78°F), whereas August sees considerably cooler conditions, with average temperatures around 5°C (41°F) and a maximum of only 19°C (67°F). Additionally, December is marked by higher humidity at 79% and more precipitation, with 90 mm (3.5 in) over approximately 13 days. In stark contrast, August is quite dry, experiencing minimal rainfall of just 2 mm (0.1 in) with no recorded rainy days and significantly lower humidity at 43%. For more detailed information on August weather in Uyuni, you can check out Uyuni weather in August.
December and September demonstrate distinct weather patterns, with December generally being milder and wetter. In December, temperatures range from a chilly minimum of -3°C (27°F) to a comfortable maximum of 25°C (78°F), and the month experiences an average of 90 mm (3.5 in) of precipitation over 13 days, contributing to a higher humidity level of 79%. In contrast, September has cooler temperatures, with a minimum of -5°C (23°F) and a maximum of 23°C (73°F). It is also significantly drier, receiving only 8 mm (0.3 in) of precipitation over just 1 day and exhibiting a lower humidity of 60%. For more insights into this month's climate, check out Uyuni weather in September.
In December, the weather is notably milder than in October, with average temperatures peaking at 13°C (55°F) compared to October's 11°C (52°F). While October experiences cooler nights with a minimum of -4°C (24°F), December's lowest temperature only dips to -3°C (27°F). Additionally, December sees a significant increase in precipitation, with 90 mm (3.5 in) falling over 13 days, contrasting sharply with October's mere 11 mm (0.4 in) across just 2 days. The humidity levels also rise in December to 79%, compared to 67% in October, making the latter month feel drier and slightly cooler. For more detailed weather information, check out Uyuni weather in October.
In comparing the weather of December and November, we see that December has a slightly milder minimum temperature of -3°C (27°F) compared to November’s -4°C (26°F). Both months experience similar average and maximum temperatures, with December averaging 13°C (55°F) and reaching up to 25°C (78°F), just like November. However, December is notably wetter, receiving 90 mm (3.5 in) of precipitation over 13 days, while November only sees 16 mm (0.6 in) over 5 days. Additionally, December has a higher humidity level at 79%, compared to November's 71%. For more insights on November weather, you can check Uyuni weather in November.
In December, Uyuni experiences a unique shift in weather, marked by mild temperatures and increased moisture, setting it apart from other months. While daytime highs can reach a comfortable 25°C (78°F), the nights can be quite brisk, dipping to around -3°C (27°F). This month typically brings more rainfall, with about 90 mm spread across roughly 13 days, contributing to a relative humidity of 79%. This wetter season presents a stark contrast to the drier months, making December both a revitalizing and vibrant time to visit. For a detailed understanding of the yearly climate trends, check out Uyuni Climate.