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December Weather in Montecillos, Mexico

Last updated: August 27, 2025

In December, the average temperature in Montecillos, Mexico reaches a pleasant 26°C (80°F). Expect a comfortable range, with minimums dipping to 18°C (65°F) and maximums soaring up to 35°C (95°F). Be prepared for some light rains, as precipitation averages around 18 mm (0.7 in) over 1 day, with a relatively high average humidity of 70%.

December Temperature in Montecillos

In December in Montecillos, the average temperature is 26°C (80°F), with maximums reaching 35°C (95°F) and minimums dropping as low as 18°C (65°F). This mild and warm climate makes Montecillos an ideal destination for travelers seeking comfortable weather and outdoor activities.

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

The chart illustrates December temperature patterns in Montecillos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Montecillos, December typically has an average temperature of 26°C (80°F), with highs reaching up to 35°C (95°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec808081828481828180808179
Data source: Temperature data for Montecillos 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 Montecillos

In Montecillos in December, the precipitation amount is 18 mm (0.7 in) over the course of 1 day.

December Precipitation Trends in Montecillos

The chart displays monthly precipitation patterns in Montecillos, 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. In Montecillos, December typically receives around 18 mm (0.7 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec2100333061542633662682718
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Montecillos

In Montecillos in December, humidity is 70%. With an average temperature of 26°C (80°F), this humidity feels like a warm, sticky blanket enveloping you, making travel feel laborious and prompting frequent breaks in shaded spots or air-conditioned spaces to stay comfortable.

December Average Humidity in Montecillos

This chart illustrates the average monthly humidity levels in Montecillos, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Montecillos is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%61%59%62%73%78%79%82%82%79%72%70%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Montecillos

In Montecillos in December, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Montecillos.

Maximum UV Index Levels in Montecillos for December

The chart shows the monthly maximum UV Index (UVI) for Montecillos 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. In December, the maximum UV index in Montecillos typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1011131314141313131198
Data source: Montecillos 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.

How December Weather in Montecillos Compares to Other Months

Weather in Montecillos varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Montecillos, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Montecillos, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)2 mm (0.1 inches)65%very high
February Weather27°C (80°F)0 mm (0.0 inches)61%extreme
March Weather27°C (82°F)0 mm (0.0 inches)59%extreme
April Weather28°C (83°F)0 mm (0.0 inches)62%extreme
May Weather29°C (84°F)33 mm (1.3 inches)73%extreme
June Weather27°C (82°F)306 mm (12.0 inches)78%extreme
July Weather28°C (82°F)153 mm (6.0 inches)79%extreme
August Weather27°C (81°F)263 mm (10.3 inches)82%extreme
September Weather27°C (81°F)365 mm (14.4 inches)82%extreme
October Weather27°C (81°F)268 mm (10.5 inches)79%extreme
November Weather27°C (81°F)27 mm (1.1 inches)72%very high
December Weather26°C (80°F)18 mm (0.7 inches)70%very high

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