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December Weather in San Jeronimito, Mexico

Last updated: August 27, 2025

In December, the average temperature in San Jeronimito, Mexico is a pleasant 25°C (77°F). Expect a range that can dip to a minimum of 18°C (65°F) and peak at a warm 32°C (89°F). The month typically sees 7 mm (0.3 in) of precipitation over just 1 day, while average humidity hovers around 70%, making for a comfortable atmosphere.

December Temperature in San Jeronimito

In December in San Jeronimito, the average temperature is 25°C (77°F). Maximum can reach 32°C (89°F) and minimum can be as low as 18°C (65°F). This makes it an ideal destination for travelers seeking pleasant weather and outdoor activities.

December Weather in San Jeronimito: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in San Jeronimito, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Jeronimito, December typically has an average temperature of 25°C (77°F), with highs reaching up to 32°C (89°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec767677777980818079797876
Data source: Temperature data for San Jeronimito 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 San Jeronimito

In San Jeronimito in December, the precipitation amount is 7 mm (0.3 in) over the course of 1 day.

December Precipitation Trends in San Jeronimito

The chart displays monthly precipitation patterns in San Jeronimito, 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 San Jeronimito, December typically receives around 7 mm (0.3 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec340018305144294296273407
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Jeronimito

In San Jeronimito in December, humidity is 70%. With an average temperature of 25°C (77°F), this humidity feels like walking through a warm, moist blanket that clings to your skin, making every step feel heavier as you explore the sights and sounds of your destination.

December Average Humidity in San Jeronimito

This chart illustrates the average monthly humidity levels in San Jeronimito, 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 San Jeronimito is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec66%64%63%69%73%76%78%79%78%75%72%70%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Jeronimito

In San Jeronimito 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 San Jeronimito.

Maximum UV Index Levels in San Jeronimito for December

The chart shows the monthly maximum UV Index (UVI) for San Jeronimito 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 San Jeronimito typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131413141413141198
Data source: San Jeronimito 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 San Jeronimito Compares to Other Months

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

This table compares monthly weather conditions in San Jeronimito, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)3 mm (0.1 inches)66%very high
February Weather24°C (76°F)4 mm (0.1 inches)64%extreme
March Weather25°C (77°F)0 mm (0.0 inches)63%extreme
April Weather25°C (77°F)0 mm (0.0 inches)69%extreme
May Weather26°C (79°F)18 mm (0.7 inches)73%extreme
June Weather26°C (80°F)305 mm (12.0 inches)76%extreme
July Weather27°C (81°F)144 mm (5.7 inches)78%extreme
August Weather27°C (80°F)294 mm (11.6 inches)79%extreme
September Weather26°C (80°F)296 mm (11.6 inches)78%extreme
October Weather26°C (79°F)273 mm (10.7 inches)75%extreme
November Weather26°C (78°F)39 mm (1.6 inches)72%very high
December Weather25°C (77°F)7 mm (0.3 inches)70%very high

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