May Weather in San Cristobal de las Casas, Mexico

Last updated: April 22, 2025

May in San Cristobal de las Casas, Mexico, envelops the region in a warming embrace with maximum temperatures reaching 32°C (90°F), while an average of 21°C (70°F) offers a comfortable respite. The month is characterized by a significant minimum of 13°C (56°F) during cooler nights. Rainfall is prevalent, as 255 mm (10.1 in) of precipitation soaks the landscape across 22 days, maintaining a 64% humidity level that enhances the lush greenery. Visitors will experience both the vibrancy of tropical weather and the gentle rhythm of May showers, making it a captivating time to explore this charming city.

May Temperature in San Cristobal de las Casas

In May, San Cristobal de las Casas experiences a delightful blend of warmth and mildness, with temperatures reflecting a perfect spring ambiance. The daily minimum reaches a comfortable 13°C (56°F), while the average temperature stabilizes around 21°C (70°F), making it ideal for outdoor exploration. During the day, temperatures can soar to a maximum of 32°C (90°F), reminiscent of the preceding months. This slight uptick in warmth compared to April indicates a transition as summer approaches, yet the evenings remain refreshingly cool, inviting locals and travelers alike to enjoy the charm of this vibrant town. Overall, May strikes a harmonious balance between comfortable daytime warmth and cooler evenings, perfect for soaking in the rich culture and stunning landscapes.

May Weather in San Cristobal de las Casas: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in San Cristobal de las Casas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec636668707068686868676564
Data source: Temperature data for San Cristobal de las Casas 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 San Cristobal de las Casas

May marks a dramatic shift in weather for San Cristobal de las Casas, as it experiences a staggering 255 mm (10.1 in) of precipitation over 22 days. This surge in rainfall not only underscores May's position as a peak month in the wet season, but it also lays the groundwork for the even heavier downpours to follow in June. The rainfall in May is significantly higher than that of previous months, such as April, which recorded just 50 mm (2.0 in) over 8 days. As the landscape transforms under the weight of moisture, the lush greenery of the region flourishes, showcasing nature's resilience and beauty. This month serves as a precursor to the intense rainfall that characterizes the subsequent summer months, where San Cristobal will face nearly continual showers, underscoring the area's tropical climate dynamics.

May Precipitation Trends in San Cristobal de las Casas

The chart displays monthly precipitation patterns in San Cristobal de las Casas, 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.
JanFebMarAprMayJunJulAugSepOctNovDec15612502555312623464482984723
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Cristobal de las Casas

In May, San Cristobal de las Casas experiences a notable shift in humidity as it begins to rise again after a brief decline in the preceding months. With humidity levels at 64%, May marks a transitional period leading into the wetter summer months. This moderate humidity is a contrast to the drier conditions seen in April, which recorded the lowest levels at 59%. As the year progresses, humidity will surge, peaking in the latter part of the year, particularly in August and September when levels reach an impressive 87%. Thus, May serves as a gentle reminder of the lush, verdant landscapes that are characteristic of the rainy seasons that follow.

May Average Humidity in San Cristobal de las Casas

This chart illustrates the average monthly humidity levels in San Cristobal de las Casas, with May's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how May's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec83%76%66%59%64%69%82%87%87%88%88%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in San Cristobal de las Casas

In May, San Cristobal de las Casas experiences an extreme UV Index of 15, consistent with the high levels seen since April and extending into the following months. With a burn time of just 10 minutes, the risk of skin damage remains significant, urging residents and visitors alike to take necessary precautions against sun exposure. This trend of high UV levels illustrates the importance of sun safety in the early summer months, emphasizing the need for sunblock and protective clothing. As spring transitions toward summer, awareness of these conditions is crucial for enjoying the vibrant outdoor life of this picturesque town. For more detailed information, check the San Cristobal de las Casas UV Index.

Maximum UV Index Levels in San Cristobal de las Casas for May

The chart shows the monthly maximum UV Index (UVI) for San Cristobal de las Casas 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.
JanFebMarAprMayJunJulAugSepOctNovDec10131415151515141413109
Data source: San Cristobal de las Casas 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 San Cristobal de las Casas

May in San Cristobal de las Casas promises a delightful blend of warmth and sunshine, boasting around 316 hours of radiant daylight. This month transitions seamlessly from the highs of March, which enjoys the most abundant sunshine at 318 hours, to a lively atmosphere that echoes the vibrant energy of spring. April also holds strong with 311 hours, creating a picturesque lead-up to May. The sun continues to shine brightly, with July peaking at 322 hours, but May maintains its charm, as daylight hours remain high amidst blossoming landscapes. With daylight steadily tapering off towards the summer months, May stands out as a particularly bright time to experience the allure of this charming Mexican town.

Monthly Sunshine Duration in San Cristobal de las Casas: May Highlighted

The May sunshine duration represents the total number of hours San Cristobal de las Casas 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.
JanFebMarAprMayJunJulAugSepOctNovDec238h279h318h311h316h273h322h312h288h287h290h300h
Data source: San Cristobal de las Casas May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Cristobal de las Casas During May

When considering the likelihood of sunny weather in May in San Cristobal de las Casas, it’s essential to note a significant dip in sunshine, with only a 27% chance of clear skies. This marks a stark contrast to the sunnier months of February and March, which enjoy probabilities as high as 76% and 68%, respectively. Following the vibrant early months of the year, April also sees a moderate 50% chance of sunshine, yet May transitions toward the cloudier seasons. As the rainy months of June and beyond approach, with their dismal chances of sunshine falling to around 11% to 23%, May's lower sun probability sets the stage for the wet season ahead. Overall, the trend clearly indicates that while the early year invites sun, May signals the beginning of a more overcast period.

Percentage of Sunny Days in May in San Cristobal de las Casas

The chart illustrates the percentage of sunny days in San Cristobal de las Casas 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 San Cristobal de las Casas experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec52%76%68%50%27%11%23%19%15%32%53%69%
Data source: San Cristobal de las Casas May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Cristobal de las Casas in May

In San Cristobal de las Casas, Mexico, daylight duration exhibits a fascinating rhythm throughout the year. Starting in January and February, the city enjoys a consistent 11 hours of daylight, setting a gentle tone for the year. As spring emerges, March and April offer a slight increase, with daylight extending to 12 hours, inviting longer outdoor activities. The trend plateaus in May, maintaining that 12-hour mark before transitioning to the longest days of the year in June, when there are a generous 13 hours of sunlight. Following this peak, daylight tapers back to 12 hours from July through September, offering a beautiful balance of daylight as the seasons shift. As the year winds down, October through December sees a return to 11 hours, creating a cozy and familiar cycle that embraces the charm of each season in this vibrant locale.

Average Daylight Hours in San Cristobal de las Casas for May

The chart illustrates the variation in daylight duration in San Cristobal de las Casas throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 14m11h 35m12h 2m12h 31m12h 54m13h 6m12h 59m12h 39m12h 11m11h 43m11h 19m11h 7m
Data source: San Cristobal de las Casas daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in San Cristobal de las Casas

In San Cristóbal de las Casas, the month of May brings a subtle shift in the wind, with an average speed of 1.3 m/s (3 mph), making it one of the calmest months of the year. This gentle breeze marks a continuation of the gradual decline in wind speed that begins in April, contrasting with the slightly stronger gusts experienced during the colder months from November to March. As the weather warms and the dry season approaches its end, the softer winds of May contribute to a tranquil atmosphere, perfect for exploring the vibrant culture and stunning landscapes of this charming Mexican city. This trend of decreasing wind carries through to June, when calmness prevails, offering a peaceful backdrop for outdoor activities and adventures.

Average May Wind Speed in San Cristobal de las Casas

The chart displays monthly wind speed patterns in San Cristobal de las Casas, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.61.81.71.61.3 m/s1.11.41.21.11.31.81.6
Data source: San Cristobal de las Casas May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in San Cristobal de las Casas Compares to Other Months

The weather in San Cristobal de las Casas changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in San Cristobal de las Casas and find detailed weather information for every month.

In comparing the weather of May and January, it's clear that May is characterized by warmer temperatures, with averages reaching up to 21°C (70°F) and maximums hitting 32°C (90°F). In contrast, January experiences cooler temperatures, averaging 17°C (63°F) and peaking at 29°C (84°F). Additionally, May sees significantly more precipitation, with an average of 255 mm (10.1 in) over 22 days, while January is much drier, only receiving 15 mm (0.6 in) over just 4 days. Interestingly, humidity levels are also higher in January at 83%, compared to May's 64%. For detailed insights about January weather specifically, check out San Cristobal de las Casas weather in January.

When comparing the weather in May and February, notable differences emerge. May typically features warmer temperatures, with a minimum of 13°C (56°F), an average of 21°C (70°F), and a maximum reaching up to 32°C (90°F). In contrast, February has slightly cooler temperatures, ranging from a minimum of 8°C (47°F) to an average of 19°C (66°F) and a maximum of 30°C (86°F). Additionally, May experiences significantly more precipitation, with 255 mm (10.1 in) over 22 days, whereas February only sees a modest 6 mm (0.2 in) of rain in just one day. The humidity levels are also different, with February being more humid at 76% compared to May's 64%. For more details on February weather, you can visit San Cristobal de las Casas weather in February.

In comparing the weather between May and March, we observe that both months experience similar maximum temperatures, peaking at around 32°C (90°F) in May and 32°C (89°F) in March. However, May generally has higher minimum temperatures, starting at 13°C (56°F) compared to March's 10°C (50°F). Additionally, precipitation levels are significantly different: May is much wetter, receiving 255 mm (10.1 in) of rain over 22 days, while March only sees 12 mm (0.5 in) of rainfall across just 3 days. Humidity levels are quite close, with May at 64% and March slightly higher at 66%. For a detailed look at March weather, check out San Cristobal de las Casas weather in March.

In comparing the weather between April and May, we see some notable differences. Both months share the same average temperature of 21°C (70°F), but May experiences higher minimum and maximum temperatures, with lows of 13°C (56°F) and highs reaching 32°C (90°F). April’s temperatures are slightly more moderate, with a minimum of 10°C (51°F) and the same maximum of 32°C (90°F). Precipitation also varies significantly; May sees a dramatic increase with 255 mm (10.1 in) over 22 days, compared to April's 50 mm (2.0 in) over just 8 days. Humidity levels are slightly higher in May at 64%, compared to 59% in April. For more details, you can check San Cristobal de las Casas weather in April.

May and June exhibit a noticeable shift in weather patterns. May typically experiences a range of temperatures from a minimum of 13°C (56°F) to a maximum of 32°C (90°F), with an average of 21°C (70°F). The month sees significant precipitation, averaging 255 mm (10.1 in) over 22 days, and humidity levels at 64%. In contrast, June has slightly higher minimum temperatures, starting at 14°C (57°F), but a lower maximum of 29°C (84°F) and an average of 20°C (68°F). The month is marked by even heavier rainfall, accumulating to 531 mm (20.9 in) over 28 days, with humidity increasing to 69%. For a more detailed look at the weather specific to June, visit San Cristobal de las Casas weather in June.

In May, the weather in San Cristobal de las Casas generally features warmer temperatures, with an average of 21°C (70°F) and maximums reaching up to 32°C (90°F). However, this month also sees significant rainfall, with 255 mm (10.1 in) falling over 22 days and a humidity level of 64%. In contrast, July offers slightly cooler temperatures, averaging 20°C (69°F) with maximums of 29°C (84°F). Precipitation in July is slightly higher at 262 mm (10.3 in) occurring over 20 days, and the humidity increases to a more tropical 82%. For a detailed look at the July weather, you can check this link: San Cristobal de las Casas weather in July.

In May, the weather typically features milder temperatures, with an average high of 32°C (90°F) and a comfortable humidity level of 64%. The month experiences significant rainfall, with 255 mm (10.1 in) over 22 days, indicating a transition into the wetter season. In contrast, August presents cooler temperatures, with an average high of 29°C (84°F), but it is marked by higher humidity at 87% and even greater rainfall, totaling 346 mm (13.6 in) over 23 days. This increase in precipitation and humidity suggests a more tropical feel during August, making it distinct from the relatively drier May. For more detailed insights, visit San Cristobal de las Casas weather in August.

May and September present contrasting weather patterns, with May typically enjoying warmer temperatures, averaging around 21°C (70°F), compared to September's slightly cooler average of 20°C (68°F). Both months share similar minimum temperatures at 13°C (56°F); however, May can reach a maximum of 32°C (90°F), while September's peak temperature is milder at 28°C (83°F). Precipitation is notably higher in September, totaling 448 mm (17.6 in) over 27 days, compared to May's 255 mm (10.1 in) across 22 days, leading to a significant increase in humidity levels that average 87% in September versus 64% in May. For a detailed outlook on September weather, you can refer to San Cristobal de las Casas weather in September.

May and October present distinct contrasts in weather patterns. In May, temperatures range from a minimum of 13°C (56°F) to a warm average of 21°C (70°F), peaking at a maximum of 32°C (90°F). This month also experiences significant rainfall, with 255 mm (10.1 in) of precipitation over 22 days, accompanied by a humidity level of 64%.

In contrast, October has slightly cooler temperatures, with a minimum of 13°C (55°F), an average of 20°C (68°F), and a maximum of 27°C (82°F). Rainfall is even more prominent in October, accumulating to 298 mm (11.7 in) across 20 days, and the humidity rises substantially to 88%. To learn more about the specific climate in October, you can check out San Cristobal de las Casas weather in October.

May and November display distinct weather patterns, reflecting the transition from pre-summer warmth to the cooler autumn months. In May, temperatures range from a minimum of 13°C (56°F) to a high of 32°C (90°F), with an average around 21°C (70°F). This month sees substantial rainfall, totaling 255 mm (10.1 in) across 22 days, along with moderate humidity at 64%. In contrast, November offers milder conditions with temperatures ranging from a low of 9°C (48°F) to a maximum of 28°C (82°F), averaging 18°C (65°F). This month also benefits from significantly less precipitation, totaling 47 mm (1.8 in) over just 8 days, although humidity is notably higher at 88%. For a closer look at the specifics of November weather, check out San Cristobal de las Casas weather in November.

May and December exhibit notable differences in weather patterns. In May, temperatures range from a minimum of 13°C (56°F) to a maximum of 32°C (90°F), with an average of 21°C (70°F). This month also sees significant rainfall, accumulating 255 mm (10.1 in) over 22 days, contributing to a moderate humidity level of 64%. In contrast, December experiences cooler temperatures, with a minimum of 6°C (42°F) and a maximum of 28°C (83°F), resulting in an average temperature of 18°C (64°F). Precipitation is considerably lower in December, totaling just 23 mm (0.9 in) over 3 days, and the humidity rises to 88%. For more detailed information, you can check San Cristobal de las Casas weather in December.

Compare San Cristobal de las Casas's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in San Cristobal de las Casas

As May arrives in San Cristobal de las Casas, the charming city experiences a notable shift in weather patterns. Temperatures rise, bringing warmer days with highs around 32°C and comfortable averages of 21°C. While the climate becomes more humid, reaching about 64%, it is also marked by increased rainfall, with approximately 22 days of precipitation contributing to a total of 255 mm for the month. This combination of warmth and rain distinguishes May from the cooler, drier months that precede it, setting the stage for lush landscapes and vibrant flora. To learn more about the seasonal climate trends, visit San Cristobal de las Casas Climate.