December Weather in San Cristobal de las Casas, Mexico

Last updated: April 22, 2025

December in San Cristobal de las Casas delivers a delightful blend of cool and mild weather, perfect for exploring its rich cultural tapestry. With maximum temperatures reaching 28°C (83°F), the average hovers around a comfortable 18°C (64°F), while cool nights can dip to a refreshing 6°C (42°F). Though the month sees 23 mm (0.9 in) of rain over just 3 days, the high humidity at 88% creates a vibrant texture in the air, making the lush landscapes even more enchanting. Whether strolling through charming streets or enjoying local festivities, December offers a unique experience in this picturesque Mexican town.

December Temperature in San Cristobal de las Casas

As December rolls into San Cristobal de las Casas, the temperatures begin to dip, creating a cooler yet comfortable atmosphere. With a minimum of around 6°C (42°F) and an average temperature of 18°C (64°F), this month marks the transition into the cooler season, offering a refreshing change from the warmer months preceding it. Daytime highs remain pleasant, reaching up to 28°C (83°F), allowing for enjoyable afternoons spent exploring the city’s vibrant culture and surroundings. This slight drop in temperatures compared to November's milder averages sets the stage for cozy evenings, making December a delightful time to experience the charm of this picturesque Mexican town.

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

The chart illustrates December 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.

December Precipitation in San Cristobal de las Casas

In San Cristóbal de las Casas, December sees a noticeable dip in precipitation compared to the bustling rainy months earlier in the year. With just 23 mm (0.9 in) of rainfall over a mere 3 days, it marks a shift from the intense downpours of June and August, where totals soared above 500 mm. This tranquil month transitions the region into a drier phase, hinting at the approach of the cooler dry season. As the year wraps up, the reduced precipitation creates a serene ambiance, allowing residents and visitors alike to enjoy the historic city's charm without the interruptions of frequent rains.

December 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 December's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec15612502555312623464482984723
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Cristobal de las Casas

In December, San Cristobal de las Casas experiences a notable consistency in its humidity levels, maintaining a high 88%—a figure that aligns with the elevated humidity of the preceding months. As the year draws to a close, the trend shows a steady increase from the dryer days of April, which recorded only 59% humidity, to the more humid summer months. The monsoon season, which peaks in August and September, brings with it a marked rise in humidity that remains high through the fall and into winter. This persistent moisture creates a lush and vibrant landscape, making December an enchanting time to experience the unique natural beauty and cultural richness of this charming Mexican town.

December Average Humidity in San Cristobal de las Casas

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

December UV Index in San Cristobal de las Casas

The UV Index in San Cristobal de las Casas reflects a noticeable trend as the year comes to a close. In December, the UV Index stands at 9, categorized as very high, allowing for a burn time of just 15 minutes—a slight decrease compared to the preceding months. This month marks the transition from the intense summer sun, where the Index often reached extreme levels of 15, into a more manageable yet still significant UV exposure. Notably, from January through March, the area experiences some of the highest levels, prompting vigilance in sun protection. As winter sets in, while the index drops, outdoor enthusiasts should still be mindful of sun exposure. For detailed information, explore San Cristobal de las Casas UV Index.

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

The chart shows the monthly maximum UV Index (UVI) for San Cristobal de las Casas in December, 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 December 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.

December Sunshine in San Cristobal de las Casas

December in San Cristobal de las Casas shines brightly with 300 hours of sunshine, making it one of the sunniest months of the year. As we transition from November's 290 hours, the significant increase reflects a consistent trend of increasing daylight leading up to the end of the year. Following the peak sunshine months of July and August, which boast 322 and 312 hours respectively, December maintains a robust luminosity, creating a perfect backdrop for festive celebrations. The city's charm is accentuated by this pleasant weather, inviting visitors to explore its rich culture under the warm glow of the December sun.

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

The December sunshine duration represents the total number of hours San Cristobal de las Casas experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec238h279h318h311h316h273h322h312h288h287h290h300h
Data source: San Cristobal de las Casas December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Cristobal de las Casas During December

In San Cristobal de las Casas, December holds a promising 69% chance of sunny weather, making it one of the more favorable months for sunlight. This trend is particularly inviting when juxtaposed with the wetter months leading up to December, where chances plummet to as low as 11% in June and 15% in September. Although the sunny probability dips slightly in the earlier months of the year, most notably in April at 50% and May at 27%, December emerges as a reliable choice for those seeking brighter days before the new year. The gradual increase in sun likelihood from the dreary summer months ultimately sets the stage for a festive and pleasant December, perfect for exploring the vibrant culture of this enchanting city.

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

The chart illustrates the percentage of sunny days in San Cristobal de las Casas throughout the year, with December 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 December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Cristobal de las Casas in December

In San Cristóbal de las Casas, December brings with it 11 hours of daylight, maintaining the same duration as January and February. This consistency in daylight duration suggests a transition from the brighter months of spring and summer, where daylight peaks at 13 hours in June. As the year progresses towards winter, daylight gradually recedes, showcasing a gentle ebb from the 12 hours experienced throughout the warmer months of March to September. Notably, this rhythmic pattern of daylight hours not only highlights the region's subtropical climate but also creates a captivating annual cycle for residents and visitors alike, setting the stage for the festive season as days shorten and nights deepen.

Average Daylight Hours in San Cristobal de las Casas for December

The chart illustrates the variation in daylight duration in San Cristobal de las Casas throughout the year, with December 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.

December Winds in San Cristobal de las Casas

As December settles over San Cristobal de las Casas, the wind whispers gently through the streets, with an average speed of 1.6 m/s (3 mph), mirroring the tranquil ambiance of the holiday season. This slight breeze is typical for December, maintaining a consistent pattern seen throughout the year, where wind speeds generally hover around the 3 to 4 mph mark. From the cooler months of January and November, which feature similar breezes, we see a subtle ebb during April and May, reflecting a transitional calm before the warmth of summer. Overall, December's winds offer a serene backdrop, capturing the essence of the town's serene charm as the year draws to a close.

Average December 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 December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.61.81.71.61.31.11.41.21.11.31.81.6 m/s
Data source: San Cristobal de las Casas December wind data, generated using information from the Copernicus Climate Change Service.

How December 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 December'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.

December and January in San Cristobal de las Casas present a relatively mild winter climate, with only slight variations in temperature and precipitation. December experiences a temperature range from a minimum of 6°C (42°F) to a maximum of 28°C (83°F), while January sees slightly warmer temperatures, with a minimum of 7°C (44°F) and a maximum of 29°C (84°F). Precipitation is modest in both months, with December receiving 23 mm (0.9 in) over 3 days and January slightly less at 15 mm (0.6 in) over 4 days. Humidity levels also differ slightly, with December's humidity at 88% compared to January's 83%. For a more detailed look at January's weather, you can visit San Cristobal de las Casas weather in January.

December and February exhibit notable differences in weather. In December, temperatures range from a minimum of 6°C (42°F) to a maximum of 28°C (83°F), with an average of 18°C (64°F). The month experiences higher humidity at 88% and receives 23 mm (0.9 in) of precipitation over approximately three days. In contrast, February sees slightly warmer temperatures, with lows of 8°C (47°F) and highs reaching 30°C (86°F), averaging 19°C (66°F). February is drier, with only 6 mm (0.2 in) of rain falling on just one day and lower humidity at 76%. For more detailed weather insights, check out San Cristobal de las Casas weather in February.

In December, the weather in San Cristobal de las Casas features a mild range of temperatures, with a minimum of 6°C (42°F) and a maximum of 28°C (83°F). The month sees moderate humidity at 88% and experiences around 23 mm (0.9 in) of precipitation over three days. In contrast, March offers slightly warmer conditions, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 32°C (89°F). The precipitation is lighter at 12 mm (0.5 in) and humidity decreases to 66%, creating a drier atmosphere. For a more comprehensive overview, you can check the details here: San Cristobal de las Casas weather in March.

The weather in December and April shows notable differences in both temperature and precipitation. In December, temperatures range from a minimum of 6°C (42°F) to a maximum of 28°C (83°F), with an average of 18°C (64°F) and relatively high humidity at 88%. Precipitation is light, with only 23 mm (0.9 in) over about three days. In contrast, April experiences warmer conditions, with temperatures ranging from a minimum of 10°C (51°F) to a maximum of 32°C (90°F), averaging 21°C (70°F). However, April is also wetter, with 50 mm (2.0 in) of precipitation spread over eight days and a humidity level of 59%. This comparison highlights the transition from the cooler, drier conditions of December to the warmer, wetter climate in April. For more details on April weather, visit San Cristobal de las Casas weather in April.

December and May present contrasting weather conditions. In December, temperatures range from a mild minimum of 6°C (42°F) to a pleasant average of 18°C (64°F), peaking at 28°C (83°F). The month sees low precipitation levels, totaling just 23 mm (0.9 in) over approximately 3 days, and a high humidity rate of 88%. In contrast, May experiences significantly warmer temperatures, with a minimum of 13°C (56°F), an average of 21°C (70°F), and a maximum of 32°C (90°F). However, it also brings increased rainfall, totaling 255 mm (10.1 in) across around 22 days and lower humidity at 64%. For more detailed insights on May's weather, you can check San Cristobal de las Casas weather in May.

December and June exhibit contrasting weather patterns in San Cristobal de las Casas. In December, temperatures range from a comfortable minimum of 6°C (42°F) to a maximum of 28°C (83°F), with an average of 18°C (64°F). The precipitation during this month is relatively low at 23 mm (0.9 in), occurring over just 3 days, and humidity levels are quite high at 88%.

In stark comparison, June experiences milder minimum temperatures starting at 14°C (57°F) and a near-equal maximum of 29°C (84°F), with an average temperature of 20°C (68°F). However, this month brings significant rainfall, with a staggering 531 mm (20.9 in) of precipitation over 28 days, resulting in a much lower humidity level of 69%. For more detailed insights about the weather during this time, check out San Cristobal de las Casas weather in June.

December and July present contrasting weather patterns in San Cristobal de las Casas. In December, temperatures range from a minimum of 6°C (42°F) to a maximum of 28°C (83°F), with an average temperature of 18°C (64°F). The month is relatively dry, receiving only 23 mm (0.9 in) of precipitation over about 3 days, accompanied by high humidity levels at 88%. In contrast, July experiences higher temperatures, with a minimum of 13°C (56°F) and a maximum of 29°C (84°F), averaging 20°C (69°F). However, it is significantly wetter, recording 262 mm (10.3 in) of rainfall across 20 days, while humidity hovers around 82%. For more details, check out San Cristobal de las Casas weather in July.

Comparing the weather between December and August reveals distinct differences in temperature and precipitation patterns. In December, temperatures range from a minimum of 6°C (42°F) to a maximum of 28°C (83°F), with an average of 18°C (64°F), creating a mild climate that is generally comfortable. The month experiences relatively low precipitation, with only 23 mm (0.9 in) over three days, and humidity levels at a high 88%.

In contrast, August presents a warmer climate with a minimum temperature of 13°C (56°F) and a maximum of 29°C (84°F), averaging 20°C (68°F). However, it is significantly wetter, receiving 346 mm (13.6 in) of rain spread across 23 days, while humidity remains comparable at 87%. For more details on August weather patterns, you can visit San Cristobal de las Casas weather in August.

When comparing the weather in December and September, there are notable differences in temperature and precipitation. December typically sees milder temperatures, with a minimum of 6°C (42°F) and an average of 18°C (64°F), while September starts warmer with a minimum of 13°C (56°F) and averages around 20°C (68°F). Despite both months peaking at a maximum of 28°C (83°F), September is characterized by significantly higher precipitation, receiving 448 mm (17.6 in) over 27 days, compared to December's relatively dry 23 mm (0.9 in) over just 3 days. Humidity levels are quite similar, hovering around 88% in December and 87% in September. For more detailed insights on September weather, you can visit San Cristobal de las Casas weather in September.

December weather in San Cristobal de las Casas tends to be milder, with temperatures ranging from a minimum of 6°C (42°F) to a maximum of 28°C (83°F) and an average of 18°C (64°F). In contrast, October presents a warmer atmosphere, with temperatures fluctuating between 13°C (55°F) and 27°C (82°F) while averaging around 20°C (68°F). However, October is significantly wetter, receiving 298 mm (11.7 in) of precipitation over 20 days, compared to December’s relatively dry 23 mm (0.9 in) over just 3 days. Both months share high humidity levels of 88%. For more details on October weather, visit San Cristobal de las Casas weather in October.

In December, the weather in San Cristobal de las Casas features slightly lower minimum temperatures, ranging from 6°C (42°F) to a maximum of 28°C (83°F), while the average temperature remains consistent at around 18°C (64°F). Precipitation decreases significantly to just 23 mm (0.9 in) over 3 days, compared to November, which experiences 47 mm (1.8 in) across 8 days. The humidity remains constant at 88% for both months, creating a consistently moist atmosphere. For a more detailed comparison, you can visit San Cristobal de las Casas weather in November.

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

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

In December, San Cristobal de las Casas experiences a refreshing shift in weather, marked by cooler temperatures and increased humidity compared to other months. With pleasant daytime highs around 28°C (83°F) and crisp nights dipping to a minimum of 6°C (42°F), this month offers a delightful contrast that invites exploration of the town's vibrant culture and stunning scenery. The likelihood of rain is minimal, with just a few days of precipitation, making it an ideal time for visitors looking to enjoy the festive atmosphere without the summer heat. For a deeper dive into the area's climate patterns, be sure to check out San Cristobal de las Casas Climate.