Last updated: August 21, 2025
Nestled in the arid landscape of northern Chile, San Pedro de Atacama experiences a mild and dry May, characterized by a maximum temperature reaching 25°C (77°F) during the day and a cool average of 12°C (54°F) at night. As temperatures occasionally dip to a minimum of -1°C (31°F), visitors should prepare for the brisk evening air. The month sees minimal precipitation, with only 3 mm (0.1 in) of rain across just one day, contributing to the 60% humidity that retains the region's enchanting desert charm. This unique climate offers a captivating experience for travelers seeking to explore the stunning landscapes and rich cultural heritage of San Pedro de Atacama.
In May, temperatures in San Pedro de Atacama reflect the transition into cooler months, showcasing a notable decrease in both daily highs and lows compared to earlier in the year. The month opens with nighttime lows dipping to a chilly -1°C (31°F), while daytime temperatures hover around a mild average of 12°C (54°F), peaking at a comfortable 25°C (77°F). This shift marks a significant change from the more temperate climates of the summer months, as April's averages still managed to remain close to 16°C (60°F). As the desert begins to cool off, visitors can expect crisp nights and pleasantly warm days—perfect for exploring the breathtaking landscapes of the Atacama Region.
In the month of May, San Pedro de Atacama experiences a significant dip in precipitation, with only 3 mm (0.1 in) recorded—marking one of the driest periods of the year. Rainfall occurs just once, continuing the trend of minimal moisture typical for this high-altitude desert region. Following a slightly wetter February with 54 mm (2.1 in), May stands as a reminder of the stark contrasts in weather patterns, as the slow transition to dry conditions commences. This minimal rainfall underscores the aridity that defines the area, with the rain-loving larrea tridentata shrub continuing to adapt to the infrequent precipitation. As the dry season looms, the landscape prepares for another chapter of its resilient desert cycle.
In May, San Pedro de Atacama experiences a notable shift in humidity, dropping to 60%, a significant departure from the higher levels seen in the preceding months. This decline follows a peak in March at 84%, indicating a gradual decrease as the region transitions from the more humid summer months into a drier winter. By June, humidity levels continue to decrease further to 52%, heralding the onset of the dry season. Overall, May marks a pivotal point in the annual humidity cycle, balancing the tail end of autumn's moisture with the arid climate that San Pedro is renowned for, setting the stage for the crisp, dry days of winter ahead.
As May arrives in San Pedro de Atacama, Chile, the UV Index reflects a notable decline from the sweltering heights of the previous summer months, dropping to a still very high index of 10. This reduction signifies a slight easing in sun intensity, resulting in a longer burn time of 15 minutes compared to the previous months where exposure was classified as extreme, demanding at most 10 minutes of precautionary measures. However, the caution shouldn't be entirely relaxed; a very high UV Index still warrants vigilance under the clear skies of this desert region. As the year progresses, the UV Index fluctuates through the seasons, capturing the essence of what it means to enjoy the great outdoors safely. For detailed UV index data and tips on protection, visit San Pedro de Atacama UV Index.
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In May, San Pedro de Atacama, Chile, enjoys an impressive 323 hours of sunshine, continuing the trend of outstanding sunlight that characterizes this striking desert locale. Following the peak of 360 hours in March, the city gradually transitions into the late autumn months, with May still basking in considerable light before the winter sets in. This month stands as a testament to the region's consistent brightness, nestled between April's 335 hours and June's 302 hours. As the sun graces the landscape, visitors can explore the unique natural wonders of the area, soaking in the vibrant sunshine that makes San Pedro a captivating destination year-round.
In San Pedro de Atacama, Chile, the month of May offers a delightful blend of sunshine, boasting a 78% chance of clear skies. This follows a trend of increasing sunny days throughout the year, with April showing an impressive 86% likelihood of sun and leading into a slightly lower yet still favorable chance in May. As spring unfolds, the region experiences a mix of warmth and sunshine, making it an ideal time for travelers to explore its stunning landscapes. Following May, the sunny probabilities dip slightly in June and July before climbing again toward the end of the year, particularly in October when there's a remarkable 93% chance of clear weather. This pattern suggests that while May is a wonderful choice for visiting, the peak sunny months await just around the corner.
In San Pedro de Atacama, Chile, the rhythm of daylight showcases a fascinating seasonal pattern. Starting with January's abundant 13 hours, the days gradually shorten over the next few months, reaching 10 hours in May. This reduction continues through June and July, with consistent daylight hours, before a subtle shift begins. As August arrives, daylight starts to increase again, heralding the return of longer days, peaking at 13 hours by November and December. This cyclical variation in daylight not only highlights the stark beauty of the Atacama Desert but also sets the stage for a range of activities and experiences throughout the year.
In May, San Pedro de Atacama experiences a slight uptick in wind activity, with average wind speeds reaching 2.5 m/s (6 mph). This marks a gradual increase from the consistent 2.4 m/s (5 mph) seen in the early months of the year, heralding a subtle shift towards breezier days. As the region transitions into late spring, it sets the stage for the stronger winds of June, which average at 3.2 m/s (7 mph). This gentle rise in May's wind speed not only enhances the arid desert's dynamic landscape but also creates a refreshing atmosphere for adventurers exploring its breathtaking terrains. The trend hints at the impending seasonal changes, promising an invigorating experience as visitors soak in the stunning vistas of the Atacama.
Weather in San Pedro de Atacama varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in San Pedro de Atacama, focusing on differences in temperature, rainfall, humidity, and UV levels.
Comparing the weather in May and January reveals distinct seasonal differences. In May, temperatures can range from a chilly minimum of -1°C (31°F) to a comfortable average of 12°C (54°F), peaking at 25°C (77°F). This month experiences minimal precipitation, with only 3 mm (0.1 in) of rain over just one day and a humidity level of 60%. In contrast, January sees noticeably warmer temperatures, with a minimum of 9°C (49°F) and an average of 19°C (66°F), reaching a maximum of 30°C (87°F). However, it also brings more rainfall, accumulating 26 mm (1.0 in) across about five days, along with a higher humidity of 75%. For more detailed information, you can check San Pedro de Atacama weather in January.
In comparing the weather between May and February, it's evident that February tends to be much warmer and wetter. February sees temperatures ranging from a minimum of 8°C (47°F) to a maximum of 31°C (88°F), with an average temperature of 18°C (65°F) and a notable 54 mm (2.1 in) of precipitation over 7 days. In contrast, May experiences significantly cooler temperatures, with a minimum of -1°C (31°F), an average of 12°C (54°F), and a maximum of 25°C (77°F), along with only 3 mm (0.1 in) of precipitation on just one day. The humidity is also higher in February at 81% compared to 60% in May. For more detailed insights, you can check San Pedro de Atacama weather in February.
In comparing the weather of May and March, May presents cooler temperatures with a minimum of -1°C (31°F) and an average of 12°C (54°F), while March offers milder conditions, with a minimum of 7°C (45°F) and an average of 18°C (64°F). March is notably wetter, receiving 11 mm (0.4 in) of precipitation over 2 days, compared to May's 3 mm (0.1 in) in just one day. Additionally, March has higher humidity at 84%, contrasting with May's more moderate 60%. For more details, check out San Pedro de Atacama weather in March.
In comparing the weather of April and May, we see some notable differences. April features slightly warmer temperatures, with a minimum of 2°C (36°F) and an average of 16°C (60°F), peaking at a maximum of 28°C (83°F). This month also had no recorded days of precipitation, resulting in a higher humidity level of 71%. In contrast, May experiences cooler temperatures, with a minimum of -1°C (31°F), an average of 12°C (54°F), and a maximum of 25°C (77°F). Although May shows a reduction in precipitation to just 3 mm (0.1 in) over one day, it maintains a lower humidity level of 60%. For more details about April's weather, you can visit San Pedro de Atacama weather in April.
In comparing the weather of May and June, we observe some notable differences. In May, temperatures range from a low of -1°C (31°F) to a pleasant average of 12°C (54°F), reaching a maximum of 25°C (77°F), accompanied by minimal precipitation of just 3 mm (0.1 inches) over one day and a humidity level of 60%. June, on the other hand, presents slightly cooler temperatures, with a minimum of -2°C (29°F), an average of 10°C (51°F), and a maximum of 24°C (76°F). While total precipitation increases to 6 mm (0.2 inches), it occurs over no days, resulting in lower humidity at 52%. This shift indicates a trend towards cooler and drier conditions as the summer approaches. For more specifics on June weather, you can check San Pedro de Atacama weather in June.
In comparison to July, May experiences slightly warmer temperatures, with an average of 12°C (54°F) compared to July's average of 11°C (51°F). The maximum temperature in May reaches 25°C (77°F), while July peaks at 24°C (75°F). Additionally, May has a higher humidity level of 60% versus July's 51%, making May feel a bit more humid. Interestingly, while May receives about 3 mm of precipitation over just one day, July has dry conditions, recording only 1 mm of precipitation without any rainy days. For more details on July weather, you can check San Pedro de Atacama weather in July.
May and August in San Pedro de Atacama present distinct weather patterns despite similar maximum temperatures. In May, temperatures range from a chilly -1°C (31°F) to a pleasant 25°C (77°F), with an average of 12°C (54°F) and a humidity level of 60%. This month also sees a slight amount of precipitation, totaling just 3 mm over one day. In contrast, August experiences slightly cooler temperatures, with a minimum of -2°C (29°F) and an average of 11°C (53°F), yet it maintains a similar maximum of 25°C (78°F). August is notably drier, receiving no precipitation across the month and exhibiting lower humidity at 43%. For more detailed information, you can visit San Pedro de Atacama weather in August.
May and September offer distinct weather experiences. May's temperatures vary more significantly, ranging from a chilly minimum of -1°C (31°F) to a pleasant maximum of 25°C (77°F), with an average of 12°C (54°F). It also has a higher humidity level at 60% and minimal rainfall, experiencing just 3 mm over one day. In contrast, September features slightly milder temperatures, with a minimum of 0°C (32°F), an average of 15°C (59°F), and a warm maximum of 28°C (82°F). Notably, September is much drier, with only 1 mm of precipitation and no rainy days, contributing to a lower humidity level of 49%. For more detailed information, check out San Pedro de Atacama weather in September.
May and October present distinct weather patterns, showcasing a transition from spring to autumn. In May, temperatures range from a chilly -1°C (31°F) at night to a pleasant 25°C (77°F) during the day, accompanied by about 3 mm of precipitation on just one day, along with a humidity level of 60%. In contrast, October offers milder temperatures, with nighttime lows of 0°C (33°F) and daytime highs reaching 29°C (84°F). Remarkably, October sees no precipitation, contributing to a drier climate with a lower humidity of 49%. For more detailed information, you can explore San Pedro de Atacama weather in October.
In May, the weather is quite variable, with temperatures ranging from a chilly minimum of -1°C (31°F) to a pleasant maximum of 25°C (77°F), accompanied by a moderate average of 12°C (54°F). The relatively high humidity at 60% and some precipitation (3 mm over 1 day) contribute to a more invigorating atmosphere. In contrast, November offers warmer temperatures with a minimum of 4°C (39°F) and a maximum of 30°C (86°F), averaging around 18°C (65°F). Notably, November experiences no rainfall and lower humidity at 47%, creating a drier and more comfortable climate. For more detailed information, check out San Pedro de Atacama weather in November.
In May, the weather in San Pedro de Atacama is characterized by cooler temperatures, with a minimum of -1°C (31°F) and an average of 12°C (54°F), peaking at a maximum of 25°C (77°F). The month sees very little precipitation, recorded at just 3 mm (0.1 in) over one day, and the humidity hovers around 60%.
In contrast, December brings warmer conditions, with a minimum of 6°C (43°F) and an average temperature of 19°C (66°F), reaching up to 32°C (90°F) at its highest. Precipitation slightly increases to 6 mm (0.2 in) over one day, while humidity decreases to 53%. For a closer look at the specifics of December weather, you can check San Pedro de Atacama weather in December.
In May, San Pedro de Atacama experiences a notable shift in weather compared to other months, providing a unique experience for visitors. The temperatures offer a comfortable warmth during the day, with maximums reaching around 25°C (77°F), while nights can be quite chilly, dipping to around -1°C (31°F). This range creates an inviting atmosphere for outdoor exploration, especially with the low humidity at 60%. Additionally, precipitation is minimal, contributing to the region's characteristic dry climate, with just 3 mm of rain expected on average over the month. Visitors can enjoy the stunning landscapes under clear skies, making May an excellent time for adventurers eager to discover the beauty of San Pedro de Atacama. For more details on the region's weather patterns year-round, check out the San Pedro de Atacama Climate.