nomadseason

December Weather in San Jeronimo, Guatemala

Last updated: August 23, 2025

In December, the average temperature in San Jeronimo, Guatemala hovers around 19°C (67°F). Expect minimums of 7°C (45°F) and maximums reaching up to 31°C (88°F). The region experiences approximately 17 mm (0.7 in) of precipitation over 3 days, with humidity levels averaging a comfortable 76%.

December Temperature in San Jeronimo

In December in San Jeronimo, the average temperature is 19°C (67°F). Maximum temperatures can reach 31°C (88°F), while minimums can drop as low as 7°C (45°F). This makes San Jeronimo an ideal destination for travelers looking to enjoy mild weather with the possibility of warm afternoons and cool evenings.

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

The chart illustrates December temperature patterns in San Jeronimo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Jeronimo, December typically has an average temperature of 19°C (67°F), with highs reaching up to 31°C (88°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec666970747472727272716867
Data source: Temperature data for San Jeronimo generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in San Jeronimo

In San Jeronimo in December, the precipitation amount is 17 mm (0.7 in) over the course of 3 days.

December Precipitation Trends in San Jeronimo

The chart displays monthly precipitation patterns in San Jeronimo, 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 Jeronimo, December typically receives around 17 mm (0.7 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec1691534145182981691722047717
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in San Jeronimo

In San Jeronimo in December, humidity is 76%. With an average temperature of 19°C (67°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities a bit sluggish and requiring regular breaks to stay hydrated while exploring.

December Average Humidity in San Jeronimo

This chart illustrates the average monthly humidity levels in San Jeronimo, 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 Jeronimo is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%68%59%57%65%66%75%82%82%83%80%76%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Jeronimo

In San Jeronimo in December, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in San Jeronimo.

Maximum UV Index Levels in San Jeronimo for December

The chart shows the monthly maximum UV Index (UVI) for San Jeronimo 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 Jeronimo typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11131515141414141413119
Data source: San Jeronimo 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 Jeronimo Compares to Other Months

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

This table compares monthly weather conditions in San Jeronimo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather19°C (67°F)16 mm (0.6 inches)76%extreme
February Weather20°C (69°F)9 mm (0.3 inches)68%extreme
March Weather21°C (70°F)15 mm (0.6 inches)59%extreme
April Weather23°C (74°F)34 mm (1.3 inches)57%extreme
May Weather23°C (74°F)145 mm (5.7 inches)65%extreme
June Weather22°C (72°F)182 mm (7.2 inches)66%extreme
July Weather22°C (72°F)98 mm (3.9 inches)75%extreme
August Weather22°C (72°F)169 mm (6.7 inches)82%extreme
September Weather22°C (72°F)172 mm (6.8 inches)82%extreme
October Weather21°C (71°F)204 mm (8.0 inches)83%extreme
November Weather20°C (69°F)77 mm (3.0 inches)80%extreme
December Weather19°C (67°F)17 mm (0.7 inches)76%very high

Compare San Jeronimo's Climate with Cities Worldwide