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December Weather in Mexico, United States

Last updated: June 24, 2025

In December, the average temperature in Mexico, United States hovers around 0°C (32°F), with minimum temperatures plummeting to -18°C (0°F) and a potential maximum reaching 16°C (61°F). Expect a significant precipitation amount of 133 mm (5.3 in) over approximately 19 days, paired with an average humidity of a high 86%. Stay prepared for a chilly and damp month!

December Temperature in Mexico

In December in Mexico, the average temperature is 0°C (32°F). The maximum can reach 16°C (61°F), while the minimum can drop as low as -18°C (0°F). Be sure to pack warm clothing if you're planning to visit during this time.

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

The chart illustrates December temperature patterns in Mexico, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mexico, December typically has an average temperature of 0°C (32°F), with highs reaching up to 16°C (61°F) and lows dropping to around -18°C (0°F).
JanFebMarAprMayJunJulAugSepOctNovDec262733445565727164544032
Data source: Temperature data for Mexico 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 Mexico

In Mexico in December, the precipitation amount is 133 mm (5.3 in), occurring over a span of 19 days.

December Precipitation Trends in Mexico

The chart displays monthly precipitation patterns in Mexico, 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 Mexico, December typically receives around 133 mm (5.3 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec108107951301219717611792182132133
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mexico

In Mexico in December humidity is 86%. With an average temperature of 0°C (32°F), this humidity feels like a biting chill that seeps into your bones, making travel feel uncomfortable and damp, as the cold air combines with the moisture to create a brisk sensation that may deter outdoor exploration.

December Average Humidity in Mexico

This chart illustrates the average monthly humidity levels in Mexico, 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 Mexico is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Mexico

In Mexico in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Mexico, you can visit Hourly UV Index in Mexico.

Maximum UV Index Levels in Mexico for December

The chart shows the monthly maximum UV Index (UVI) for Mexico 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 Mexico typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2468910997532
Data source: Mexico 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 Mexico Compares to Other Months

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

This table compares monthly weather conditions in Mexico, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)108 mm (4.3 inches)90%low
February Weather-3°C (28°F)107 mm (4.2 inches)90%moderate
March Weather1°C (34°F)95 mm (3.8 inches)87%high
April Weather7°C (44°F)130 mm (5.1 inches)88%very high
May Weather13°C (56°F)121 mm (4.8 inches)82%very high
June Weather18°C (65°F)97 mm (3.8 inches)79%very high
July Weather22°C (72°F)176 mm (6.9 inches)78%very high
August Weather22°C (71°F)117 mm (4.6 inches)76%very high
September Weather18°C (64°F)92 mm (3.6 inches)78%high
October Weather12°C (54°F)182 mm (7.2 inches)84%moderate
November Weather4°C (40°F)132 mm (5.2 inches)89%moderate
December Weather0°C (32°F)133 mm (5.3 inches)86%low

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