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December Weather in Guayalejo, Mexico

Last updated: August 27, 2025

In Guayalejo, Mexico, the average temperature in December hovers around 21°C (71°F), making it a pleasant time to explore. However, be prepared for fluctuations, as temperatures can dip to a cool 5°C (41°F) or soar to a vibrant 37°C (99°F). During this period, expect 11 mm (0.4 in) of precipitation spread over 2 days, contributing to an average humidity level of 89%, creating a lush and inviting atmosphere.

December Temperature in Guayalejo

In December in Guayalejo, the average temperature is 21°C (71°F), with maximums reaching up to 37°C (99°F) and minimums dropping as low as 5°C (41°F). It's essential to pack for both warm days and cooler nights when traveling during this time.

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

The chart illustrates December temperature patterns in Guayalejo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guayalejo, December typically has an average temperature of 21°C (71°F), with highs reaching up to 37°C (99°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec687276818586858684807470
Data source: Temperature data for Guayalejo 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 Guayalejo

In Guayalejo in December, the precipitation amount is 11 mm (0.4 in) over the course of 2 days.

December Precipitation Trends in Guayalejo

The chart displays monthly precipitation patterns in Guayalejo, 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 Guayalejo, December typically receives around 11 mm (0.4 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec3115262058139139921131052411
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Guayalejo

In Guayalejo in December humidity is 89%. With an average temperature of 21°C (71°F), this humidity feels like walking through a warm, thick blanket, making it a challenge for travelers to remain comfortable while exploring the sights.

December Average Humidity in Guayalejo

This chart illustrates the average monthly humidity levels in Guayalejo, 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 Guayalejo is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%83%84%85%79%71%72%80%85%88%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Guayalejo

In Guayalejo 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 Guayalejo, you can refer to this Hourly UV Index in Guayalejo.

Maximum UV Index Levels in Guayalejo for December

The chart shows the monthly maximum UV Index (UVI) for Guayalejo 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 Guayalejo typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec79121212121312121086
Data source: Guayalejo 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 Guayalejo Compares to Other Months

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

This table compares monthly weather conditions in Guayalejo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (69°F)31 mm (1.2 inches)87%high
February Weather22°C (72°F)15 mm (0.6 inches)85%very high
March Weather25°C (77°F)26 mm (1.0 inches)83%extreme
April Weather27°C (82°F)20 mm (0.8 inches)84%extreme
May Weather30°C (86°F)58 mm (2.3 inches)85%extreme
June Weather30°C (86°F)139 mm (5.5 inches)79%extreme
July Weather30°C (85°F)139 mm (5.5 inches)71%extreme
August Weather30°C (86°F)92 mm (3.6 inches)72%extreme
September Weather29°C (84°F)113 mm (4.5 inches)80%extreme
October Weather27°C (80°F)105 mm (4.1 inches)85%very high
November Weather23°C (74°F)24 mm (0.9 inches)88%very high
December Weather21°C (71°F)11 mm (0.4 inches)89%high

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