December Weather in Zacatlan, Mexico

Last updated: April 22, 2025

In Zacatlán, Mexico, December brings a delightful mix of cool temperatures and refreshing moisture, characterized by a maximum of 24°C (76°F) and a comfortable average of 12°C (54°F). Visitors can expect chilly nights, with thermometers dipping to a minimum of -2°C (29°F). This month typically sees 37 mm (1.4 in) of precipitation over approximately 8 days, contributing to a high humidity level of 88% that enhances the crisp, invigorating atmosphere. Embrace the charm of Zacatlán’s December weather, perfect for cozy retreats and scenic explorations.

December Temperature in Zacatlan

In Zacatlán, Mexico, December marks a notable transition as temperatures dip to a minimum of -2°C (29°F), heralding the start of winter. The average temperature hovers around 12°C (54°F), creating a crisp yet refreshing atmosphere that contrasts with the milder months preceding it. Despite the chill, daytime highs remain pleasant, reaching up to 24°C (76°F). This pattern illustrates a gradual descent into cooler weather, as December stands out with its lower night-time temperatures compared to the relatively warm November. As the year comes to a close, Zacatlán's climate invites visitors to experience the charm of the season while indulging in festive celebrations against a backdrop of breathtaking landscapes.

December Weather in Zacatlan: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Zacatlan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec535659626463636363605654
Data source: Temperature data for Zacatlan 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 Zacatlan

In Zacatlán, Mexico, December marks a notable shift in precipitation patterns as the region experiences a considerable drop. With only 37 mm (1.4 in) of rainfall over just 8 days, this month starkly contrasts the heavier rains of preceding months, where totals often surpassed 100 mm. The festive spirit of the holiday season coincides with a drier climate, making December a time for outdoor celebrations. Notably, this reduction in precipitation signifies a transition into the cooler months while providing a respite from the intense summer rains, which peak in August and September. As the year concludes, Zacatlán’s landscape may still glisten from the earlier rains, but December's lighter showers create a tranquil ambiance, inviting both locals and visitors to embrace its charm amidst shifting weather patterns.

December Precipitation Trends in Zacatlan

The chart displays monthly precipitation patterns in Zacatlan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec73588810115026422530933726010437
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Zacatlan

In Zacatlán, Mexico, December brings a notable shift in humidity levels, sitting at a comfortable 88%. This month’s humidity is slightly lower than the preceding November, which recorded a high of 89%, yet remains elevated compared to the drier summer months, such as July at 68%. Throughout the year, humidity exhibits a distinct pattern: while it peaks in the fall with 91% in October, December marks a gradual transition back to slightly lower levels. The consistent high humidity in the winter months reflects the region's climatological traits, ensuring the air remains pleasantly crisp as the year comes to a close.

December Average Humidity in Zacatlan

This chart illustrates the average monthly humidity levels in Zacatlan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec84%78%75%71%77%76%68%70%82%91%89%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Zacatlan

As December rolls into Zacatlan, Mexico, the UV Index dips to 8, indicating a very high exposure category with a burn time of 15 minutes. This marks a slight decline from the extreme levels noted throughout much of the year, where values frequently soared above 12. Notably, from February to October, the UV Index consistently hit extreme levels, peaking at 15 in May before tapering off in the cooler months. However, December’s relatively lower index still requires caution for sun exposure, particularly for those sensitive to UV rays. Whether you're basking in the winter sun or exploring the picturesque scenery, it's essential to stay sun-safe. For more details, visit the Zacatlan UV Index.

Maximum UV Index Levels in Zacatlan for December

The chart shows the monthly maximum UV Index (UVI) for Zacatlan 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.
JanFebMarAprMayJunJulAugSepOctNovDec9121314151414141412108
Data source: Zacatlan 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 Zacatlan

December in Zacatlan, Mexico, offers a delightful blend of moderate sunshine, with 275 hours of bright daylight illuminating the picturesque landscape. As the year draws to a close, the amount of sunlight reflects a subtle but consistent trend: winter months, while shorter, still provide ample brightness compared to the earlier months. From January's 212 hours to December's 275 hours, the sunshine gradually increases, peaking in May with 316 hours. This progression highlights Zacatlan's shift from the cooler, darker winter months towards the warmer, sunnier seasons ahead. Visitors in December can bask in this inviting glow, making it a charming time to experience the region's natural beauty before the new year arrives.

Monthly Sunshine Duration in Zacatlan: December Highlighted

The December sunshine duration represents the total number of hours Zacatlan 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.
JanFebMarAprMayJunJulAugSepOctNovDec212h255h299h302h316h278h301h292h260h264h257h275h
Data source: Zacatlan December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Zacatlan During December

In Zacatlán, Mexico, December marks a notable shift in the likelihood of sunny weather, showcasing a 60% chance of sunshine that month. This trend reflects a significant increase from the preceding months, where the chance of sun typically hovers around 27% in October and November. As the year draws to a close, December emerges as a bright spot, surpassing the sunshine probabilities of earlier months like April and even May. With this promising forecast, December offers residents and visitors alike a wonderful opportunity to enjoy the beauty of Zacatlán under clear skies before the rainy season arrives in June.

Percentage of Sunny Days in December in Zacatlan

The chart illustrates the percentage of sunny days in Zacatlan 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 Zacatlan experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec38%61%58%42%33%10%13%18%13%27%28%60%
Data source: Zacatlan December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Zacatlan in December

As December unfolds in Zacatlán, Mexico, daylight begins to wane, offering only 10 hours of sunlight. This decrease marks the culmination of a gradual trend from the year’s peak daylight in May, June, and July, each boasting 13 hours. Following the summer's abundance, the days progressively shorten, dipping to 12 hours in the latter part of summer and early autumn, before settling back to 11 hours in November. This rhythmic cycle of daylight highlights Zacatlán's unique seasonal shift, where vibrant summer sunlight gives way to the cozy embrace of winter's shorter days, inviting residents to enjoy the charm of the region's festivities and cooler nights.

Average Daylight Hours in Zacatlan for December

The chart illustrates the variation in daylight duration in Zacatlan throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 4m11h 29m12h 2m12h 36m13h 4m13h 18m13h 10m12h 45m12h 13m11h 39m11h 10m10h 56m
Data source: Zacatlan daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Zacatlan

As December settles in Zacatlán, Mexico, the average wind speed gently hovers around 1.6 m/s (4 mph), maintaining a consistent rhythm as the year draws to a close. This slight uptick from the peak summer months aligns with the seasonal transition into winter, where winds tend to pick up a bit. The trend throughout the year reveals a fluctuating pattern, with the breeziest months falling in April at 1.9 m/s and the calmest in June and July, both at 1.4 m/s. December's winds mirror the earlier months, bridging a connection to spring's earlier gusts, making it an inviting time for those looking to embrace the crisp, fresh air of the mountains. This calm yet invigorating breeze not only enhances the charm of Zacatlán but also sets the stage for the vibrant festivities of the holiday season.

Average December Wind Speed in Zacatlan

The chart displays monthly wind speed patterns in Zacatlan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.61.71.81.91.71.41.41.61.41.61.51.6 m/s
Data source: Zacatlan December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Zacatlan Compares to Other Months

The weather in Zacatlan 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 Zacatlan and find detailed weather information for every month.

In comparing the weather between December and January, January tends to be slightly warmer overall. The minimum temperature in January is 1°C (34°F), compared to December's minimum of -2°C (29°F). The average temperatures are fairly close, with December averaging 12°C (54°F) and January at 11°C (53°F). However, January experiences slightly higher maximum temperatures, reaching up to 25°C (78°F) compared to December's 24°C (76°F).

In terms of precipitation, January is noticeably wetter, with a total of 73 mm (2.9 in) over 12 days, while December sees only 37 mm (1.4 in) over 8 days. Humidity levels are also marginally lower in January at 84% compared to 88% in December. For a more detailed outlook on the conditions, you can check Zacatlan weather in January.

In December, the weather features a significant chill, with minimum temperatures dropping to -2°C (29°F) and an average of 12°C (54°F). The month experiences moderate precipitation of 37 mm (1.4 in), occurring across about 8 days, alongside high humidity at 88%. In contrast, February shows a noticeable warming trend, starting with a minimum temperature of 1°C (34°F) and an average of 13°C (56°F) but peaking higher at 29°C (84°F). February also tends to be wetter, with precipitation reaching 58 mm (2.3 in) over 11 days, while humidity decreases to a more comfortable 78%. For a detailed look at weather conditions, you can check out Zacatlan weather in February.

In December, the weather is generally cooler, with temperatures ranging from a minimum of -2°C (29°F) to a pleasant maximum of 24°C (76°F), and an average of 12°C (54°F). This month sees about 37 mm (1.4 in) of precipitation over 8 days and experiences high humidity levels at 88%. In contrast, March brings warmer temperatures, starting at a minimum of 3°C (38°F) and reaching up to 29°C (84°F), with an average of 15°C (59°F). However, March is also wetter, with 88 mm (3.5 in) of precipitation spread over 14 days, and lower humidity at 75%. For those interested in a more detailed look at the weather during this month, you can find more information here: Zacatlan weather in March.

December and April exhibit notable differences in weather patterns. December typically sees cooler temperatures, with an average range of -2°C (29°F) to a pleasant 24°C (76°F), while April enjoys warmer averages between 6°C (44°F) and 29°C (85°F). Precipitation levels also vary significantly; December experiences 37 mm (1.4 in) of rain over about 8 days, whereas April is notably wetter with 101 mm (4.0 in) spread across 20 days. Additionally, December's humidity levels are higher at 88%, contrasting with April's more comfortable 70%. For a closer look at April weather specifics, you can refer to Zacatlan weather in April.

December and May present starkly contrasting weather conditions. In December, temperatures range from a chilly minimum of -2°C (29°F) to a comfortable maximum of 24°C (76°F), with an average of 12°C (54°F). The month experiences 37 mm (1.4 in) of precipitation over about 8 days, along with relatively high humidity levels at 88%. In contrast, May sees significantly warmer temperatures, with a low of 8°C (46°F) and a high reaching 29°C (85°F), averaging 18°C (64°F). However, this month is much wetter, with 150 mm (5.9 in) of precipitation spread across approximately 21 days, coupled with lower humidity at 77%. For more details on the weather patterns, you can check Zacatlan weather in May.

When comparing the weather in December and June, a marked contrast is evident. December experiences cooler temperatures, with daily averages around 12°C (54°F), whereas June sees a rise in temperatures, averaging 17°C (64°F). While December's maximum temperature reaches 24°C (76°F), June can soar to a maximum of 28°C (82°F). Additionally, December is relatively drier, with only 37 mm (1.4 in) of precipitation over 8 days, compared to June's significant rainfall of 264 mm (10.4 in) over 25 days and higher humidity levels, making it feel quite moist despite being warmer. For a detailed look at the climate nuances in June, you can visit Zacatlan weather in June.

In December, temperatures in Zacatlán range from a chilly minimum of -2°C (29°F) to a pleasant maximum of 24°C (76°F), with an average of 12°C (54°F). This month experiences relatively low precipitation at 37 mm (1.4 in) over just 8 days, but high humidity at 88%. In contrast, July sees milder weather with minimum temperatures around 10°C (50°F) and an average of 17°C (63°F), peaking at 25°C (77°F). However, July is significantly wetter, with 225 mm (8.8 in) of rain over 29 days, and a more comfortable humidity level of 68%. For more details on July weather specifics, visit Zacatlan weather in July.

December and August showcase significantly different weather patterns. In December, temperatures range from a chilly minimum of -2°C (29°F) at night to a comfortable maximum of 24°C (76°F) during the day, with an average of 12°C (54°F). The month sees relatively low precipitation at 37 mm (1.4 in) over about 8 days, coupled with high humidity at 88%. In contrast, August is warmer, with temperatures fluctuating between a minimum of 8°C (48°F) and a maximum of 25°C (77°F), averaging around 17°C (63°F). However, it is also quite rainy, with precipitation reaching 309 mm (12.2 in) over 29 days, and the humidity is notably lower at 70%. For a more detailed look, check out Zacatlan weather in August.

In comparing the weather between December and September, we see notable differences in both temperature and precipitation patterns. December experiences milder temperatures, with a minimum of -2°C (29°F) and a maximum of 24°C (76°F), resulting in an average of 12°C (54°F). In contrast, September is warmer with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 25°C (78°F), and an average of 17°C (63°F).

However, September is significantly wetter, receiving 337 mm (13.3 in) of precipitation over 27 days, compared to December's 37 mm (1.4 in) across just 8 days. Despite its higher humidity levels at 82%, September's overall weather is characterized by frequent rain. December, while cooler, has a higher humidity of 88%, creating a different feel altogether. For more detailed information about September weather, check out Zacatlan weather in September.

December and October present notable contrasts in weather conditions. In December, temperatures range from a minimum of -2°C (29°F) to a maximum of 24°C (76°F), with an average of 12°C (54°F). The month is relatively dry, with only 37 mm (1.4 in) of precipitation spread over 8 days and a humidity level of 88%. In contrast, October tends to be much wetter, with total precipitation reaching 260 mm (10.2 in) over 22 days, while temperatures are milder, ranging from a minimum of 6°C (42°F) to a maximum of 26°C (80°F) and an average of 16°C (61°F). This indicates that October is not only warmer but also significantly more humid than December. For more information on the climate during October, you can visit Zacatlan weather in October.

In December, the weather shows a slight decrease in minimum temperatures compared to November, dropping from 0°C (33°F) to -2°C (29°F), while the average and maximum temperatures remain relatively stable. Precipitation also sees a significant decline, with December recording just 37 mm (1.4 in) over 8 days, in contrast to November's 104 mm (4.1 in) over 13 days. Humidity levels are nearly the same, with December at 88% and November at 89%. For a more detailed look at November’s weather, you can check Zacatlan weather in November.

Compare Zacatlan's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Zacatlan

As December settles in, Zacatlan experiences a notable transformation in its weather. Unlike the warmer months, this winter month sees a cooler average temperature, with nighttime lows occasionally plunging to below freezing. The increasing humidity at 88% adds a crispness to the air, enhancing the charm of the season. December is also marked by moderate precipitation spread over about eight days, contributing to the lush landscape typical of the region. Visitors can enjoy a unique blend of chilly days and a festive atmosphere; for more detailed information on the climate, check out Zacatlan Climate.