December Weather in San Cristobal, Mexico

Last updated: April 22, 2025

In San Cristobal, Mexico, December brings a mild climate characterized by maximum temperatures reaching 26°C (80°F) and an average of 12°C (55°F). Nighttime can be quite brisk, with minimum temperatures dipping down to -7°C (20°F), creating a sharp contrast to the daytime warmth. The month sees minimal rain, with only 14 mm (0.6 in) of precipitation over just 1 day, allowing for plenty of opportunities to explore the charm of this vibrant city. Additionally, humidity levels hover around a high 87%, adding a sense of crispness to the already refreshing atmosphere. Whether you're wandering through its colorful streets or experiencing its rich culture, December is a splendid time to visit San Cristobal.

December Temperature in San Cristobal

In December, San Cristobal, Mexico, experiences a transitional chill, with temperatures marking the start of winter. The minimum dips to a brisk -7°C (20°F), showcasing the region's ability to swing between extremes as it approaches the colder months. The average temperature settles at 12°C (55°F), providing a mild backdrop for daytime activities, while highs reach up to 26°C (80°F), reminding us of the warmth that lingers from the previous months. This month signals a notable decrease in temperatures compared to the preceding November, making it the coldest month yet. As the year wraps up, visitors can enjoy the rich cultural landscape of San Cristobal against a serene, cool climate perfect for exploration.

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

The chart illustrates December temperature patterns in San Cristobal, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec545864677170676865635954
Data source: Temperature data for San Cristobal 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

In December, San Cristobal experiences a notable dip in precipitation, with only 14 mm (0.6 in) accumulated over just one rainy day. This marks a significant contrast to the heavy rainfall seen in the preceding months, particularly during the summer peak when June and July brought over 100 mm of rain each. As the year winds down, the drier conditions suggest a transition towards the region's dry season, offering a brief respite from the frequent downpours of the summer months. Overall, the precipitation pattern highlights a seasonal shift in San Cristobal, where December's rainfall is among the lowest, setting the stage for a clearer and more serene January ahead.

December Precipitation Trends in San Cristobal

The chart displays monthly precipitation patterns in San Cristobal, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1811972910613178142441614
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Cristobal

In San Cristobal, Mexico, December marks the peak of humidity, mirroring November's 87% level. This trend of elevated moisture levels begins in the fall, where humidity gradually ascends from 75% in January down to 64% by April, then surges again as the year comes to a close. As summer transitions to autumn, the humidity reaches its zenith with 81% in September and 85% in October, preparing the locale for a damp winter. The consistent high levels in December not only reflect the region's rich climatic tapestry but also create a unique atmospheric ambiance that is characteristic of this vibrant locale.

December Average Humidity in San Cristobal

This chart illustrates the average monthly humidity levels in San Cristobal, 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.
JanFebMarAprMayJunJulAugSepOctNovDec75%69%65%64%75%78%67%64%82%86%87%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Cristobal

In December, San Cristobal experiences a UV Index of 8, placing it within the very high exposure category, with a recommended burn time of 15 minutes. This marks a slight decline from the extreme levels seen in the earlier months, where the UV Index peaked at an impressive 15 in April and May. The trend shows that as the year winds down, residents and visitors can expect a bit of relief from the searing heat of summer, yet UV exposure remains significant. It's always wise to stay informed and protect your skin throughout the year; for more details on the UV Index, check out San Cristobal UV Index.

Maximum UV Index Levels in San Cristobal for December

The chart shows the monthly maximum UV Index (UVI) for San Cristobal 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.
JanFebMarAprMayJunJulAugSepOctNovDec9111415151414141412108
Data source: San Cristobal 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

December in San Cristobal, Mexico, wraps up the year with 283 hours of sunshine, a notable continuation of robust daylight as the month transitions into winter. This figure mirrors the slightly lower sunlight hours seen in November, reflecting a subtle dip from the peak brightness of spring and summer months, which boast impressively high totals—350 hours in May and 329 hours in April. As the year progresses, the sunniest days begin to wane, yet December still offers ample opportunities for outdoor enjoyment. The consistent trend of abundant sunshine underscores San Cristobal's reputation as a vibrant destination, inviting visitors to embrace its warm charm even in the final month of the year.

Monthly Sunshine Duration in San Cristobal: December Highlighted

The December sunshine duration represents the total number of hours San Cristobal 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.
JanFebMarAprMayJunJulAugSepOctNovDec230h268h318h329h350h332h335h335h297h296h283h283h
Data source: San Cristobal December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Cristobal During December

In December, San Cristobal, Mexico, enjoys a decent chance of sunny weather, with a sun probability of 68%. This marks a slight improvement compared to November's 66%, suggesting that as the year wraps up, residents and visitors can expect more sun-filled days. Notably, December's likelihood of sunshine aligns closely with the late spring months of May (68%) and April (67%), hinting at a favorable transition towards brighter days. While the summer months show a significant drop in sun chances, December stands out as a promising time for outdoor activities and soaking in the majestic beauty of the region under a vibrant sun.

Percentage of Sunny Days in December in San Cristobal

The chart illustrates the percentage of sunny days in San Cristobal 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 experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec61%81%68%67%68%38%30%46%28%51%66%68%
Data source: San Cristobal December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Cristobal in December

In San Cristobal, Mexico, December marks the return to shorter days, with only 10 hours of daylight. This trend of diminishing sunlight begins in October, when daylight dips to 11 hours, and continues into January, mirroring the start of the year with the same brief duration. As the months progress from February through May, the days gradually elongate, peaking at an impressive 13 hours of daylight during the summer months of June and July. Following this peak, daylight begins to wane again, transitioning back to the shorter days of late autumn and winter. This cyclical pattern reflects the region's unique climate, where daylight correlates closely with seasonal transitions, inviting both residents and visitors to embrace the rhythm of nature throughout the year.

Average Daylight Hours in San Cristobal for December

The chart illustrates the variation in daylight duration in San Cristobal throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 55m11h 24m12h 1m12h 40m13h 12m13h 28m13h 19m12h 51m12h 14m11h 35m11h 2m10h 46m
Data source: San Cristobal daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in San Cristobal

As December settles over San Cristobal, Mexico, the wind takes on a gentler character, with an average speed of just 2.2 m/s (5 mph)—the calmest it has been all year. This marks a notable shift from the earlier months when wind speeds hovered closer to 3.3 m/s in April. The trend throughout the year showcases fluctuations in wind intensity, peaking in the spring before gradually tapering off into a serene winter atmosphere. With the crisp December air, the softer breezes invite residents and visitors alike to bask in the tranquil beauty of the season, as nature seamlessly transitions towards the New Year.

Average December Wind Speed in San Cristobal

The chart displays monthly wind speed patterns in San Cristobal, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.83.12.93.32.82.82.33.02.12.32.42.2 m/s
Data source: San Cristobal December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in San Cristobal Compares to Other Months

The weather in San Cristobal 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 and find detailed weather information for every month.

In December, temperatures in San Cristobal range from a chilly minimum of -7°C (20°F) to a pleasant maximum of 26°C (80°F), with an average temperature around 12°C (55°F). The month sees relatively low precipitation, totaling only 14 mm (0.6 in) over just one day, but with a high humidity level of 87%, the air can feel quite damp.

In contrast, January experiences slightly milder minimum temperatures at -1°C (30°F), with similar maximum highs of 26°C (79°F) and an average around 12°C (54°F). Precipitation increases to 18 mm (0.7 in), falling on three days, while humidity drops to 75%, making the air feel a bit less muggy than in December. For a more detailed look at January's weather, you can visit San Cristobal weather in January.

In December, the weather experiences a notable chill, with temperatures ranging from a minimum of -7°C (20°F) to an average of 12°C (55°F) and reaching a maximum of 26°C (80°F). This month sees a high humidity level of 87% and light precipitation, accumulating to just 14 mm (0.6 in) over one day. In contrast, February brings milder conditions, with temperatures starting at a minimum of 1°C (34°F) and peaking at a warm average of 15°C (58°F), with maximum highs reaching 30°C (86°F). The humidity decreases significantly to 69%, and precipitation remains minimal at 11 mm (0.4 in) over the same one day. For more details on the weather specifics for February, you can check the following link: San Cristobal weather in February.

In December, temperatures in San Cristobal can fluctuate between a chilly min of -7°C (20°F) and a warm max of 26°C (80°F), with an average of 12°C (55°F). The month experiences significant humidity at 87% and only sees about 14 mm (0.6 in) of precipitation over just one day. In contrast, March offers a milder climate, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 33°C (91°F), and an average temperature of 18°C (64°F). The humidity drops to 65%, and precipitation is lower at 9 mm (0.3 in) over two days. For a more detailed view of the weather in March, you can check out San Cristobal weather in March.

In December, the weather is much cooler, with temperatures ranging from a chilly -7°C (20°F) at night to a pleasant 26°C (80°F) during the day, while April sees milder conditions, with minimum temperatures starting at 5°C (40°F) and peaking at a warm 33°C (91°F). The average December temperature is 12°C (55°F), whereas in April, it rises significantly to 20°C (67°F). Additionally, December has higher humidity at 87%, compared to April’s more comfortable 64%. Precipitation levels are fairly low in both months, with December receiving 14 mm over 1 day and April only 7 mm, also over 1 day. For more information, you can check San Cristobal weather in April.

December and May present significantly different weather patterns. In December, temperatures range from a chilly -7°C (20°F) at night to a mild 26°C (80°F) during the day, with an average of 12°C (55°F). The month sees minimal precipitation, just 14 mm (0.6 in) over the course of only 1 day, and humidity levels are quite high at 87%. In contrast, May features a much warmer climate, with temperatures ranging from a minimum of 8°C (47°F) to a sweltering maximum of 34°C (94°F) and an average of 21°C (71°F). Rainfall increases to 29 mm (1.1 in) across 5 days, and the humidity drops to 75%. For a more detailed look at weather during this month, check out San Cristobal weather in May.

December and June present strikingly different weather conditions. In December, temperatures can drop to a minimum of -7°C (20°F) and reach a pleasant maximum of 26°C (80°F), averaging around 12°C (55°F). The month experiences relatively low precipitation, with only 14 mm (0.6 in) falling over just 1 day, though the humidity remains high at 87%. In contrast, June boasts milder temperatures, with minimums hitting 10°C (51°F) and maximums soaring to 34°C (94°F), giving an average of 21°C (70°F). This month is considerably wetter, receiving 106 mm (4.2 in) of rain over 12 days, and has lower humidity at 78%. For more detailed insights on weather trends, check out San Cristobal weather in June.

When comparing the weather in December and July, a stark contrast emerges. December experiences cooler temperatures, with averages around 12°C (55°F) and a maximum of 26°C (80°F), while July boasts warmer averages of 20°C (68°F) and peaks reaching 31°C (87°F). Additionally, December sees minimal precipitation, with only 14 mm (0.6 in) falling over just one day, while July is much wetter, receiving 131 mm (5.2 in) across 16 days. Humidity is also notably higher in December at 87%, compared to July's 67%. For more details on July weather, visit San Cristobal weather in July.

When comparing the weather in December and August, notable differences emerge. December experiences cooler temperatures, with a minimum of -7°C (20°F) and a maximum of 26°C (80°F), while August boasts milder conditions, ranging from a minimum of 11°C (52°F) to a maximum of 31°C (87°F). Precipitation also diverges significantly; December sees only 14 mm (0.6 in) of rain over just one day, in stark contrast to August's 78 mm (3.1 in) spread across ten days. Additionally, December presents a higher humidity level of 87%, compared to August's more moderate 64%. For those interested in a detailed look at August weather patterns, visit San Cristobal weather in August.

In December, the weather is cooler with temperatures ranging from a minimum of -7°C (20°F) to a maximum of 26°C (80°F), averaging around 12°C (55°F). This month experiences significantly less precipitation, with just 14 mm (0.6 in) over the course of one day and a higher humidity of 87%. In contrast, September sees milder temperatures, with a minimum of 9°C (48°F) and a maximum of 29°C (84°F), averaging 18°C (65°F). However, it is much wetter, recording 142 mm (5.6 in) of rainfall spread over 15 days, accompanied by slightly lower humidity at 81%. For more detailed information, you can check San Cristobal weather in September.

In December, the weather in San Cristobal experiences a notable drop in temperatures compared to October, with a minimum of -7°C (20°F) and an average of 12°C (55°F), while October boasts milder temperatures ranging from a minimum of 5°C (41°F) to an average of 17°C (64°F). Although December has a maximum temperature of 26°C (80°F), it is still cooler than October's higher peak of 28°C (83°F). Additionally, precipitation in December is significantly lower, at just 14 mm (0.6 in) over only 1 day, whereas October sees more rainfall, totaling 44 mm (1.7 in) across 8 days. Humidity levels remain fairly similar, with December at 87% and October slightly lower at 85%. For more details on October's weather, you can refer to San Cristobal weather in October.

In comparing the weather between November and December, December experiences a slightly cooler range of temperatures, with minimums dropping to -7°C (20°F) compared to November's 0°C (31°F). While both months have similar average maximum temperatures, December's maximum can reach up to 26°C (80°F), just slightly lower than November's 28°C (83°F). Precipitation is comparable as well, with December receiving 14 mm (0.6 in) in just one day, while November has 16 mm (0.6 in) spread over two days. Interestingly, both months maintain a high humidity level of 87%. For more detailed insights into November's climate specifics, visit San Cristobal weather in November.

Compare San Cristobal's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in San Cristobal

In December, San Cristobal experiences a notable shift in weather, combining a cooler average temperature with an increased likelihood of atmospheric moisture. The maximum highs that reach around 26°C (80°F) contrast sharply with the chilly minimums that can dip down to -7°C (20°F), making it a unique month for visitors. The low precipitation of just 14 mm (0.6 in) over the course of a single day reflects a generally dry climate, yet the humidity sits at a high 87%, creating a refreshing-crispness in the air. This blend of conditions sets December apart from other months, offering a distinct experience for those looking to explore the beauty of San Cristobal. For more on what to expect throughout the year, check out San Cristobal Climate.