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December Weather in Lerma, Mexico

Last updated: August 27, 2025

In December, the average temperature in Lerma, Mexico hovers around a pleasant 24°C (76°F). However, temperatures can vary, dipping as low as 13°C (56°F) and soaring up to 34°C (94°F). Expect a bit of rain, with 21 mm (0.8 in) of precipitation spread over 4 days, and a high humidity level at 84%. Whether you prefer warm days or cooler nights, you'll experience a delightful climate this month!

December Temperature in Lerma

In December in Lerma, the average temperature is 24°C (76°F). Maximums can reach 34°C (94°F), while minimums can dip as low as 13°C (56°F). This mild weather makes Lerma an ideal destination for travelers seeking comfortable temperatures.

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

The chart illustrates December temperature patterns in Lerma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lerma, December typically has an average temperature of 24°C (76°F), with highs reaching up to 34°C (94°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec757880848583848383817876
Data source: Temperature data for Lerma 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 Lerma

In Lerma in December, the precipitation amount is 21 mm (0.8 in) over a span of 4 days.

December Precipitation Trends in Lerma

The chart displays monthly precipitation patterns in Lerma, 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 Lerma, December typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec18641434205871261351404021
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Lerma

In Lerma in December humidity is 84%. With an average temperature of 24°C (76°F), this humidity feels like a warm, damp embrace that can make outdoor activities feel sticky and uncomfortable, requiring frequent breaks in the shade and plenty of hydration for travelers.

December Average Humidity in Lerma

This chart illustrates the average monthly humidity levels in Lerma, 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 Lerma is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%73%64%61%60%59%64%76%80%82%83%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Lerma

In Lerma 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 Lerma.

Maximum UV Index Levels in Lerma for December

The chart shows the monthly maximum UV Index (UVI) for Lerma 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 Lerma typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810131313131313121198
Data source: Lerma 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 Lerma Compares to Other Months

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

This table compares monthly weather conditions in Lerma, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)18 mm (0.7 inches)78%very high
February Weather26°C (78°F)6 mm (0.2 inches)73%very high
March Weather27°C (81°F)4 mm (0.2 inches)64%extreme
April Weather29°C (84°F)14 mm (0.6 inches)61%extreme
May Weather30°C (85°F)34 mm (1.3 inches)59%extreme
June Weather29°C (84°F)205 mm (8.1 inches)59%extreme
July Weather29°C (84°F)87 mm (3.4 inches)64%extreme
August Weather28°C (84°F)126 mm (5.0 inches)76%extreme
September Weather28°C (83°F)135 mm (5.3 inches)80%extreme
October Weather27°C (82°F)140 mm (5.5 inches)82%extreme
November Weather25°C (78°F)40 mm (1.6 inches)83%very high
December Weather24°C (76°F)21 mm (0.8 inches)84%very high

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