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December Weather in Chumatlan, Mexico

Last updated: August 27, 2025

In Chumatlan, Mexico, the average temperature in December hovers around 19°C (66°F), with a comfortable range from a cool 5°C (41°F) to a warm 31°C (89°F). Expect about 62 mm (2.4 in) of precipitation over 10 days, and be prepared for a high average humidity of 91%.

December Temperature in Chumatlan

In December in Chumatlan, the average temperature is 19°C (66°F). Maximums can reach 31°C (89°F), while minimums can drop to as low as 5°C (41°F). This diverse temperature range makes Chumatlan an ideal destination for travelers looking to experience both warm and cool weather during their visit.

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

The chart illustrates December temperature patterns in Chumatlan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chumatlan, December typically has an average temperature of 19°C (66°F), with highs reaching up to 31°C (89°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec656771768079798079757066
Data source: Temperature data for Chumatlan 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 Chumatlan

In Chumatlan in December, the total precipitation amount is 62 mm (2.4 in) over a period of 10 days.

December Precipitation Trends in Chumatlan

The chart displays monthly precipitation patterns in Chumatlan, 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 Chumatlan, December typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec979012213115526323026132633014762
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Chumatlan

In Chumatlan in December humidity is 91%. With an average temperature of 19°C (66°F), this humidity feels like a heavy blanket, making travel uncomfortable and muggy, causing sweat to accumulate and sticking to clothes, which can dampen the joy of exploring.

December Average Humidity in Chumatlan

This chart illustrates the average monthly humidity levels in Chumatlan, 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 Chumatlan is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%86%83%80%82%79%72%74%84%92%91%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Chumatlan

In Chumatlan in December, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Chumatlan.

Maximum UV Index Levels in Chumatlan for December

The chart shows the monthly maximum UV Index (UVI) for Chumatlan 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 Chumatlan typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810111213131312121197
Data source: Chumatlan 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 Chumatlan Compares to Other Months

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

This table compares monthly weather conditions in Chumatlan, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)97 mm (3.8 inches)88%very high
February Weather20°C (68°F)90 mm (3.5 inches)86%very high
March Weather22°C (71°F)122 mm (4.8 inches)83%extreme
April Weather24°C (76°F)131 mm (5.2 inches)80%extreme
May Weather26°C (80°F)155 mm (6.1 inches)82%extreme
June Weather26°C (80°F)263 mm (10.3 inches)79%extreme
July Weather26°C (80°F)230 mm (9.1 inches)72%extreme
August Weather27°C (80°F)261 mm (10.3 inches)74%extreme
September Weather26°C (79°F)326 mm (12.8 inches)84%extreme
October Weather24°C (76°F)330 mm (13.0 inches)92%extreme
November Weather21°C (70°F)147 mm (5.8 inches)91%very high
December Weather19°C (66°F)62 mm (2.4 inches)91%high

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