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December Weather in Mesillas, Mexico

Last updated: August 27, 2025

In December, the average temperature in Mesillas, Mexico is a mild 13°C (55°F). Expect temperature variations with a minimum of -5°C (22°F) and a maximum of 27°C (80°F). With an average humidity of 87%, you might feel a touch of chill in the air. Additionally, anticipate 12 mm (0.5 in) of precipitation over the course of just 1 day.

December Temperature in Mesillas

In December in Mesillas, the average temperature is 13°C (55°F). Maximums can reach 27°C (80°F), while minimums can dip as low as -5°C (22°F). This unpredictable climate makes Mesillas an exciting destination for travelers who enjoy experiencing a range of temperatures.

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

The chart illustrates December temperature patterns in Mesillas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mesillas, December typically has an average temperature of 13°C (55°F), with highs reaching up to 27°C (80°F) and lows dropping to around -5°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec555964687170676866645955
Data source: Temperature data for Mesillas 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 Mesillas

In Mesillas in December, the precipitation amount is 12 mm (0.5 in) over the course of 1 day.

December Precipitation Trends in Mesillas

The chart displays monthly precipitation patterns in Mesillas, 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 Mesillas, December typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec18111063011613779135481412
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mesillas

In Mesillas in December, humidity is 87%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making travel sluggish and slightly uncomfortable, as each step seems to cling to the damp air.

December Average Humidity in Mesillas

This chart illustrates the average monthly humidity levels in Mesillas, 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 Mesillas is approximately 87%, offering insight into how humid the weather typically is during this month.
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 Mesillas

In Mesillas 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 Mesillas.

Maximum UV Index Levels in Mesillas for December

The chart shows the monthly maximum UV Index (UVI) for Mesillas 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 Mesillas typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9111415151414141412108
Data source: Mesillas 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 Mesillas Compares to Other Months

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

This table compares monthly weather conditions in Mesillas, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (55°F)18 mm (0.7 inches)75%very high
February Weather15°C (59°F)11 mm (0.4 inches)69%extreme
March Weather18°C (65°F)10 mm (0.4 inches)65%extreme
April Weather20°C (68°F)6 mm (0.2 inches)64%extreme
May Weather22°C (71°F)30 mm (1.2 inches)75%extreme
June Weather21°C (70°F)116 mm (4.6 inches)78%extreme
July Weather20°C (68°F)137 mm (5.4 inches)67%extreme
August Weather20°C (68°F)79 mm (3.1 inches)64%extreme
September Weather19°C (66°F)135 mm (5.3 inches)81%extreme
October Weather18°C (64°F)48 mm (1.9 inches)85%extreme
November Weather15°C (60°F)14 mm (0.6 inches)87%very high
December Weather13°C (55°F)12 mm (0.5 inches)87%very high

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