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December Weather in Cal y Mayor, Mexico

Last updated: August 27, 2025

In December, the average temperature in Cal y Mayor, Mexico hovers around 19°C (67°F). Expect a minimum chill of 9°C (49°F), while the pleasant highs can reach up to 31°C (88°F). With 188 mm (7.4 in) of precipitation spread over 19 days, and an average humidity of 88%, be prepared for a mix of warm days and refreshing rains!

December Temperature in Cal y Mayor

In December, in Cal y Mayor, the average temperature is 19°C (67°F). The maximum can reach 31°C (88°F), while the minimum can be as low as 9°C (49°F). This pleasant climate makes Cal y Mayor an ideal destination for outdoor activities and sightseeing.

December Weather in Cal y Mayor: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Cal y Mayor, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cal y Mayor, December typically has an average temperature of 19°C (67°F), with highs reaching up to 31°C (88°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec666870747775757574736967
Data source: Temperature data for Cal y Mayor 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 Cal y Mayor

In Cal y Mayor in December, the precipitation amount is 188 mm (7.4 in), which occurs over 19 days.

December Precipitation Trends in Cal y Mayor

The chart displays monthly precipitation patterns in Cal y Mayor, 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 Cal y Mayor, December typically receives around 188 mm (7.4 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec19313613482147321247287342374263188
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Cal y Mayor

In Cal y Mayor in December, humidity is 88%. With an average temperature of 19°C (67°F), this humidity feels like a heavy blanket enveloping you, making travel feel sticky and exhausting as you navigate through the sweltering air.

December Average Humidity in Cal y Mayor

This chart illustrates the average monthly humidity levels in Cal y Mayor, 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 Cal y Mayor is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%76%66%59%64%69%82%87%87%88%88%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Cal y Mayor

In Cal y Mayor 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 Cal y Mayor.

Maximum UV Index Levels in Cal y Mayor for December

The chart shows the monthly maximum UV Index (UVI) for Cal y Mayor 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 Cal y Mayor typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9121314141414131312108
Data source: Cal y Mayor 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 Cal y Mayor Compares to Other Months

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

This table compares monthly weather conditions in Cal y Mayor, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather19°C (66°F)193 mm (7.6 inches)83%very high
February Weather20°C (69°F)135 mm (5.3 inches)76%extreme
March Weather21°C (71°F)134 mm (5.3 inches)66%extreme
April Weather24°C (75°F)82 mm (3.2 inches)59%extreme
May Weather25°C (77°F)147 mm (5.8 inches)64%extreme
June Weather24°C (76°F)321 mm (12.6 inches)69%extreme
July Weather24°C (75°F)247 mm (9.7 inches)82%extreme
August Weather24°C (75°F)287 mm (11.3 inches)87%extreme
September Weather24°C (75°F)342 mm (13.5 inches)87%extreme
October Weather23°C (73°F)374 mm (14.7 inches)88%extreme
November Weather21°C (69°F)263 mm (10.4 inches)88%very high
December Weather19°C (67°F)188 mm (7.4 inches)88%very high

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