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December Weather in Montemorelos, Mexico

Last updated: August 26, 2025

In December, the average temperature in Montemorelos, Mexico is a mild 16°C (61°F). Expect a range where the mercury can dip to a chilly -2°C (29°F) or soar to a sunny 33°C (93°F). The region receives approximately 23 mm (0.9 in) of precipitation over 3 days, while the average humidity sits comfortably at 86%. Prepare for a month of delightful weather variability!

December Temperature in Montemorelos

In December in Montemorelos, the average temperature is 16°C (61°F), with maximums reaching up to 33°C (93°F) and minimums dropping as low as -2°C (29°F). Travelers should be prepared for a wide range of temperatures, making it essential to pack both warm and cool clothing for their visit.

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

The chart illustrates December temperature patterns in Montemorelos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Montemorelos, December typically has an average temperature of 16°C (61°F), with highs reaching up to 33°C (93°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec586370748082838479736561
Data source: Temperature data for Montemorelos 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 Montemorelos

In Montemorelos in December, the precipitation amount is 23 mm (0.9 in) over the course of 3 days.

December Precipitation Trends in Montemorelos

The chart displays monthly precipitation patterns in Montemorelos, 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 Montemorelos, December typically receives around 23 mm (0.9 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec2319337299707716147632923
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Montemorelos

In Montemorelos in December, humidity is 86%. With an average temperature of 16°C (61°F), this humidity feels like walking through a warm, thick blanket of air that clings to your skin, making outdoor activities feel sticky and uncomfortable for traveling.

December Average Humidity in Montemorelos

This chart illustrates the average monthly humidity levels in Montemorelos, 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 Montemorelos is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%78%81%82%74%68%67%75%78%83%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Montemorelos

In Montemorelos in December, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Montemorelos, you can refer to this Hourly UV Index in Montemorelos.

Maximum UV Index Levels in Montemorelos for December

The chart shows the monthly maximum UV Index (UVI) for Montemorelos 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 Montemorelos typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec79101212121212111086
Data source: Montemorelos 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 Montemorelos Compares to Other Months

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

This table compares monthly weather conditions in Montemorelos, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (59°F)23 mm (0.9 inches)84%high
February Weather17°C (63°F)19 mm (0.8 inches)83%very high
March Weather21°C (70°F)33 mm (1.3 inches)78%very high
April Weather24°C (75°F)72 mm (2.8 inches)81%extreme
May Weather27°C (80°F)99 mm (3.9 inches)82%extreme
June Weather28°C (82°F)70 mm (2.7 inches)74%extreme
July Weather28°C (83°F)77 mm (3.0 inches)68%extreme
August Weather29°C (85°F)16 mm (0.6 inches)67%extreme
September Weather26°C (79°F)147 mm (5.8 inches)75%extreme
October Weather23°C (73°F)63 mm (2.5 inches)78%very high
November Weather18°C (66°F)29 mm (1.1 inches)83%very high
December Weather16°C (61°F)23 mm (0.9 inches)86%high

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