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December Weather in Chalma, Mexico

Last updated: August 27, 2025

In December, the average temperature in Chalma, Mexico is a pleasant 20°C (68°F). Temperatures can vary significantly, with a minimum of 6°C (43°F) and a maximum reaching up to 34°C (93°F). Expect around 36 mm (1.4 in) of precipitation over the course of approximately 7 days, and be prepared for the high average humidity of 91%, which adds to the tropical feel of the region.

December Temperature in Chalma

In December in Chalma, the average temperature is 20°C (68°F). Maximums can reach 34°C (93°F) and minimums can be as low as 6°C (43°F). Be prepared for a range of temperatures and pack accordingly for your travels!

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

The chart illustrates December temperature patterns in Chalma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chalma, December typically has an average temperature of 20°C (68°F), with highs reaching up to 34°C (93°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec667074808484848582787268
Data source: Temperature data for Chalma 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 Chalma

In Chalma in December, the total precipitation amount is 36 mm (1.4 in) over a span of 7 days.

December Precipitation Trends in Chalma

The chart displays monthly precipitation patterns in Chalma, 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 Chalma, December typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec644358731051491041121702486936
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Chalma

In Chalma in December, humidity is 91%. With an average temperature of 20°C (68°F), this humidity feels like a heavy blanket wrapping around you, making travel feel stifling and often exhausting, as each step you take requires more effort in the thick, muggy air.

December Average Humidity in Chalma

This chart illustrates the average monthly humidity levels in Chalma, 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 Chalma 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 Chalma

In Chalma 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 Chalma.

Maximum UV Index Levels in Chalma for December

The chart shows the monthly maximum UV Index (UVI) for Chalma 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 Chalma typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec710121212131312121187
Data source: Chalma 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 Chalma Compares to Other Months

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

This table compares monthly weather conditions in Chalma, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather19°C (67°F)64 mm (2.5 inches)88%high
February Weather21°C (70°F)43 mm (1.7 inches)86%very high
March Weather24°C (75°F)58 mm (2.3 inches)83%extreme
April Weather27°C (80°F)73 mm (2.9 inches)80%extreme
May Weather29°C (85°F)105 mm (4.1 inches)82%extreme
June Weather29°C (84°F)149 mm (5.9 inches)79%extreme
July Weather29°C (84°F)104 mm (4.1 inches)72%extreme
August Weather29°C (85°F)112 mm (4.4 inches)74%extreme
September Weather28°C (83°F)170 mm (6.7 inches)84%extreme
October Weather26°C (79°F)248 mm (9.8 inches)92%extreme
November Weather22°C (72°F)69 mm (2.7 inches)91%very high
December Weather20°C (68°F)36 mm (1.4 inches)91%high

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