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December Weather in San Martin Caltenco, Mexico

Last updated: August 27, 2025

In December, the average temperature in San Martin Caltenco, Mexico hovers around 14°C (57°F). Expect a minimum of -2°C (28°F) and a pleasant maximum of 26°C (80°F). During this month, you can anticipate 5 mm (0.2 in) of precipitation over just 1 day, while the average humidity levels around 88% ensure a refreshing atmosphere.

December Temperature in San Martin Caltenco

In December in San Martin Caltenco, the average temperature is 14°C (57°F), with maximums reaching 26°C (80°F) and minimums as low as -2°C (28°F). This variation makes it essential for travelers to pack layers to stay comfortable throughout the day.

December Weather in San Martin Caltenco: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in San Martin Caltenco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Martin Caltenco, December typically has an average temperature of 14°C (57°F), with highs reaching up to 26°C (80°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec565962646463626362625957
Data source: Temperature data for San Martin Caltenco 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 San Martin Caltenco

In San Martin Caltenco in December, the precipitation amount is 5 mm (0.2 in) over a duration of 1 day.

December Precipitation Trends in San Martin Caltenco

The chart displays monthly precipitation patterns in San Martin Caltenco, 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 San Martin Caltenco, December typically receives around 5 mm (0.2 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec86205311821314518522988215
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Martin Caltenco

In San Martin Caltenco in December humidity is 88%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and giving a sense of stickiness that can drain your energy quickly while exploring.

December Average Humidity in San Martin Caltenco

This chart illustrates the average monthly humidity levels in San Martin Caltenco, 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 San Martin Caltenco is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%78%75%71%77%76%68%70%82%91%89%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Martin Caltenco

In San Martin Caltenco in December, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in San Martin Caltenco.

Maximum UV Index Levels in San Martin Caltenco for December

The chart shows the monthly maximum UV Index (UVI) for San Martin Caltenco 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 San Martin Caltenco typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10131515151515141513119
Data source: San Martin Caltenco 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 San Martin Caltenco Compares to Other Months

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

This table compares monthly weather conditions in San Martin Caltenco, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (56°F)8 mm (0.3 inches)84%very high
February Weather15°C (59°F)6 mm (0.2 inches)78%extreme
March Weather17°C (62°F)20 mm (0.8 inches)75%extreme
April Weather18°C (64°F)53 mm (2.1 inches)70%extreme
May Weather18°C (65°F)118 mm (4.7 inches)77%extreme
June Weather17°C (63°F)213 mm (8.4 inches)76%extreme
July Weather17°C (62°F)145 mm (5.7 inches)68%extreme
August Weather17°C (63°F)185 mm (7.3 inches)70%extreme
September Weather17°C (63°F)229 mm (9.0 inches)82%extreme
October Weather16°C (62°F)88 mm (3.5 inches)91%extreme
November Weather15°C (59°F)21 mm (0.8 inches)89%extreme
December Weather14°C (57°F)5 mm (0.2 inches)88%very high

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