December Weather in Atotonilco, Mexico

Last updated: April 22, 2025

In December, Atotonilco, Mexico, offers a pleasant climate characterized by an average temperature of 19°C (66°F). The month sees maximum temperatures reaching 28°C (82°F), providing warm days for outdoor activities, while cooler nights drop to a minimum of 9°C (49°F). Humidity levels hover around 72%, creating a comfortable atmosphere despite occasional fluctuations. Precipitation is minimal, with only 12 mm (0.5 in) of rainfall over approximately 2 days, making December an ideal time to explore the scenic beauty and cultural richness of the region.

December Temperature in Atotonilco

In Atotonilco, Mexico, December brings a refreshing chill as temperatures begin their descent; with minimums around 9°C (49°F), it marks the onset of cooler weather. The average temperature sits comfortably at 19°C (66°F), creating a pleasant atmosphere ideal for outdoor activities. By day, highs can reach up to 28°C (82°F), reminiscent of the mild conditions experienced in the preceding months. This time of year sees a notable contrast compared to the sweltering heat of the summer months, where temperatures soared significantly higher. As the year wraps up, December's weather presents a delightful balance, perfect for both locals and visitors to enjoy the natural beauty and cultural richness of the region.

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

The chart illustrates December temperature patterns in Atotonilco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec646467737885888886827366
Data source: Temperature data for Atotonilco 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 Atotonilco

In December, Atotonilco experiences a moderate precipitation amount of 12 mm (0.5 in), with rain falling on just 2 days. This marks a slight increase from November’s 17 mm but remains lower than the peak of the wet season seen in the previous months. Notably, December's rainfall is a part of a trend where precipitation begins to taper off from the heavy showers of late summer and early fall, offering a brief respite before the dry season takes hold. As the year winds down, residents can expect cooler temperatures coupled with occasional light rain, creating a tranquil atmosphere that contrasts sharply with the deluge of September's 103 mm. Overall, December serves as a transition month, signaling the end of the rainy season as Atotonilco prepares for the drier months ahead.

December Precipitation Trends in Atotonilco

The chart displays monthly precipitation patterns in Atotonilco, 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.
JanFebMarAprMayJunJulAugSepOctNovDec971000103064103221712
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Atotonilco

In Atotonilco, Mexico, December marks a month where humidity settles at 72%, maintaining the relatively high levels seen in the preceding months of November and October. As the year draws to a close, it's clear that the trend shifts towards higher humidity levels, peaking in late summer with August reaching 73% and September hitting 76%. The period from April to June showcases the lowest humidity, hovering around 51%, but as the rainy season approaches in July, levels begin to rise again. December’s humidity reflects a return to the sustained moisture typical of the fall months, offering a mild contrast to the drier spring. The overall pattern illustrates how Atotonilco experiences a cycle of humidity influenced by seasonal changes, leading to a consistently comfortable atmosphere during the winter months.

December Average Humidity in Atotonilco

This chart illustrates the average monthly humidity levels in Atotonilco, 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.
JanFebMarAprMayJunJulAugSepOctNovDec71%66%59%52%51%51%61%73%76%72%72%72%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Atotonilco

In December, Atotonilco, Mexico experiences a moderate UV Index of 5, allowing for a more leisurely sun exposure time of 30 minutes before potential skin damage occurs. This marks a gentle decline from the intense peak seen in the earlier months, particularly from April through August, when the UV Index soared to 12, classified as extreme, and required vigilance with a burn time as short as 10 minutes. As the year concludes, outdoor enthusiasts can enjoy the sun with a notably decreased risk, transitioning from the very high levels witnessed in the previous month, making it a great time to embrace the outdoors safely. For more details, visit Atotonilco UV Index.

Maximum UV Index Levels in Atotonilco for December

The chart shows the monthly maximum UV Index (UVI) for Atotonilco 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.
JanFebMarAprMayJunJulAugSepOctNovDec6810121212111211975
Data source: Atotonilco 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 Atotonilco

In Atotonilco, Mexico, December marks the gentle transition from the vibrant sunshine of late fall to the cooler embrace of winter, offering 262 hours of sunlight. This month, while still basking in the glow of the sun, reflects a slight decline from November's 264 hours, indicating the gradual shortening of days as the year winds down. November's brightness serves as a fitting preamble to December’s rich yet diminishing light, part of a broader trend as the year progresses from spring's peak of 364 hours in May to the more tempered luminosity of the winter months. Visitors can savor the captivating atmosphere that December brings, enriched by a warm sun that illuminates the charming landscape while inviting moments of relaxation before the new year unfolds.

Monthly Sunshine Duration in Atotonilco: December Highlighted

The December sunshine duration represents the total number of hours Atotonilco 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.
JanFebMarAprMayJunJulAugSepOctNovDec218h253h296h327h364h359h348h329h302h303h264h262h
Data source: Atotonilco December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Atotonilco During December

In Atotonilco, Mexico, the likelihood of sunny weather in December sees a notable dip, with only a 51% chance of sunshine—a stark contrast to the earlier months. The trend throughout the year reveals a transition from brighter days in the spring and summer, peaking in May with 79% sunshine, to a gradual decline as the year comes to a close. October stands out as the sunniest month, boasting an 88% chance, highlighting a significant drop-off leading into the cooler December days. While December offers a modest likelihood of sunshine, it marks a departure from the more consistent brightness experienced earlier in the year, presenting a blend of varied weather as winter approaches.

Percentage of Sunny Days in December in Atotonilco

The chart illustrates the percentage of sunny days in Atotonilco 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 Atotonilco experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec71%63%69%72%79%76%44%52%61%88%69%51%
Data source: Atotonilco December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Atotonilco in December

In Atotonilco, Mexico, the rhythm of daylight shifts notably throughout the year, with December offering about 10 hours of sunlight. Following a gradual increase from 11 hours in February to a peak of 13 hours in the summer months of May through August, the daylight hours begin to recede as fall approaches. By November, daylight dwindles back to 10 hours, mirroring the cycle seen at the year's start. This pattern highlights a striking contrast between the long, sunlit days of summer and the shorter, cozier days found in winter, reflecting the region's dynamic seasonal transitions.

Average Daylight Hours in Atotonilco for December

The chart illustrates the variation in daylight duration in Atotonilco throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 37m11h 13m12h 1m12h 49m13h 29m13h 49m13h 38m13h 2m12h 16m11h 28m10h 46m10h 26m
Data source: Atotonilco daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Atotonilco

In Atotonilco, Mexico, December brings a gentle breeze with an average wind speed of 3.3 m/s (7 mph), marking a slight dip compared to the previous months. The overall trend throughout the year reveals a comforting oscillation in wind speeds, peaking at 4.1 m/s (9 mph) in March and June. As the year progresses toward winter, wind speeds gradually decline, reaching their lowest in November at 2.7 m/s (6 mph) before slightly rebounding in December. This transition creates a peaceful atmosphere, ideal for enjoying the serene beauty of the region during the cooler months, while still maintaining a refreshing touch in the air.

Average December Wind Speed in Atotonilco

The chart displays monthly wind speed patterns in Atotonilco, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.63.44.13.83.44.13.53.22.93.52.73.3 m/s
Data source: Atotonilco December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Atotonilco Compares to Other Months

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

December and January in Atotonilco exhibit quite similar weather patterns, but with some subtle differences. December offers slightly warmer temperatures, with an average of 19°C (66°F) and a maximum reaching 28°C (82°F), while January's temperatures are just a notch lower, averaging 18°C (64°F) with a maximum of 27°C (82°F). Precipitation is slightly higher in December, measuring 12 mm (0.5 in) over about 2 days, compared to January's 9 mm (0.4 in) over just 1 day. Humidity levels remain comparable, with December at 72% and January at 71%. For a more detailed look at January's weather, you can visit Atotonilco weather in January.

In December, the weather tends to be slightly warmer, with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 28°C (82°F) and an average temperature of 19°C (66°F). The humidity is relatively high at 72%, and there is a bit more precipitation, measuring 12 mm (0.5 in) over about two days.

In contrast, February experiences a marginally cooler climate, with minimum temperatures reaching 8°C (46°F) and an average of 18°C (65°F), but still peaking at 28°C (82°F). February is drier, with only 7 mm (0.3 in) of rain falling over just one day and lower humidity at 66%. For a detailed look at February's conditions, check out Atotonilco weather in February.

In December, the weather features a minimum temperature of 9°C (49°F) and an average of 19°C (66°F), with a maximum reaching 28°C (82°F). This month experiences around 12 mm (0.5 in) of rainfall over 2 days, accompanied by a humidity level of 72%.

In contrast, March sees slightly warmer conditions, with a minimum temperature still at 9°C (49°F) but an increase in average to 20°C (67°F) and a peak temperature of 30°C (86°F). Additionally, precipitation decreases to 10 mm (0.4 in) over just 1 day, and the humidity drops to a milder 58%.

For more detailed information about March weather in Atotonilco, visit Atotonilco weather in March.

December and April present notably different weather patterns. In December, temperatures range from a minimum of 9°C (49°F) to a maximum of 28°C (82°F), with an average of 19°C (66°F). The month sees some precipitation, accumulating 12 mm (0.5 in) over two days, coupled with a higher humidity level of 72%. In contrast, April enjoys warmer temperatures, with a minimum of 14°C (57°F) and a maximum of 33°C (91°F), averaging 23°C (73°F). Significantly, April experiences no precipitation, with a humidity level dropping to 52%. This makes the weather in April not only warmer but also drier compared to December. For more detailed information, check out Atotonilco weather in April.

December and May present notably different weather conditions. In December, temperatures range from a mild 9°C (49°F) at night to a warm 28°C (82°F) during the day, with an average temperature of 19°C (66°F). This month also sees some precipitation, with 12 mm falling on about 2 days, accompanied by a higher humidity level of 72%. In contrast, May boasts warmer weather, with nighttime lows of 17°C (63°F) and daytime highs reaching a sizzling 35°C (96°F), averaging 26°C (78°F). Remarkably, May experiences no rainfall at all, resulting in lower humidity at 51%. For a more detailed look at the weather in May, visit Atotonilco weather in May.

In December, the weather is characterized by milder temperatures, with daily averages around 19°C (66°F), and a maximum reaching 28°C (82°F). The month experiences some light precipitation, with about 12 mm (0.5 in) over two days and humidity levels averaging 72%. This creates a comfortable atmosphere, although slightly damp.

In contrast, June brings considerably warmer weather, with minimum temperatures starting at 20°C (68°F) and reaching an average high of 29°C (85°F), peaking at 37°C (100°F). Rainfall is rare, with only 10 mm (0.4 in) recorded, typically spread over an entire month without any significant rainy days, leading to a much lower humidity level of 51%.

For more information on what to expect, check out Atotonilco weather in June.

When comparing the weather in December and July, significant differences emerge, particularly in temperature and humidity. December experiences milder conditions, with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 28°C (82°F) and an average of 19°C (66°F). This month sees less rainfall, with only 12 mm (0.5 in) over just two days, and a higher humidity level of 72%. In contrast, July boasts much warmer temperatures, with a minimum of 26°C (78°F) and highs reaching 38°C (100°F), averaging around 31°C (88°F). Additionally, July experiences more precipitation at 30 mm (1.2 in) across six days, combined with lower humidity levels of 60%. For a more detailed look at the weather patterns during this month, visit Atotonilco weather in July.

December and August exhibit strikingly different weather patterns. In December, temperatures range from a minimum of 9°C (49°F) to a maximum of 28°C (82°F), with an average of 19°C (66°F) and relatively low precipitation at just 12 mm (0.5 in) over 2 days. Humidity is moderate at 72%. In contrast, August brings much warmer conditions, with temperatures ranging from a minimum of 25°C (78°F) to a sweltering maximum of 37°C (100°F) and an average temperature of 31°C (89°F). Precipitation increases significantly to 64 mm (2.5 in) over 9 days, while humidity remains slightly higher at 73%. For more detailed insights, check out Atotonilco weather in August.

December and September present quite contrasting weather patterns. In December, temperatures range from a mild 9°C (49°F) at night to a pleasant high of 28°C (82°F) during the day, with relatively low precipitation of just 12 mm (0.5 in) over two days, and humidity at 72%. In stark contrast, September experiences much warmer temperatures, with lows around 22°C (72°F) and highs soaring to 39°C (102°F), accompanied by significantly higher rainfall of 103 mm (4.0 in) spread across 11 days and humidity at 76%. For a detailed look at September's weather, you can check Atotonilco weather in September.

In comparing the weather of December and October, we see some notable differences. December features milder temperatures, with a minimum of 9°C (49°F) and an average of 19°C (66°F), while October experiences a warmer minimum of 15°C (59°F) and an average of 28°C (82°F). Additionally, October can reach maximum temperatures of up to 37°C (99°F), significantly higher than December's max of 28°C (82°F). Precipitation levels also vary; December sees 12 mm (0.5 in) over 2 days, while October has more rainfall at 22 mm (0.9 in) but over just 1 day. Both months share an identical humidity level of 72%. For a detailed look at October's weather, you can refer to Atotonilco weather in October.

In December, the weather becomes milder compared to November, with average temperatures dropping from 23°C (74°F) to 19°C (66°F). The maximum temperature in December reaches 28°C (82°F), a noticeable decrease from November's maximum of 34°C (93°F). Precipitation levels are slightly lower in December, with only 12 mm (0.5 in) over two days, compared to 17 mm (0.7 in) during the same number of days in November. Humidity remains consistent at 72% for both months. For more details on November's weather, you can visit Atotonilco weather in November.

Compare Atotonilco's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Atotonilco

December in Atotonilco offers a refreshing change as the temperatures begin to cool, providing a pleasant escape from the heat of earlier months. With an average of 19°C, the weather is mild, allowing for enjoyable outdoor activities. The month sees minimal rainfall, with only a couple of days of precipitation and humidity at a comfortable 72%. This temperate climate contrasts notably with the sweltering heat of summer, making December an ideal time for both residents and visitors to experience the beauty of Atotonilco. For more insights on the region's weather patterns, check out Atotonilco Climate.