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December Weather in Usumatlan, Guatemala

Last updated: August 23, 2025

In December, the average temperature in Usumatlan, Guatemala hovers around 20°C (68°F). Expect a minimum chill of 9°C (49°F) and a warm maximum of 32°C (89°F). During this time, precipitation averages 33 mm (1.3 in) spread over about 7 days, while the humidity level sits at a comfortable 74%.

December Temperature in Usumatlan

In December in Usumatlan, the average temperature is 20°C (68°F). Maximums can reach 32°C (89°F), while minimums can be as low as 9°C (49°F). This diverse temperature range makes Usumatlan an ideal destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates December temperature patterns in Usumatlan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Usumatlan, December typically has an average temperature of 20°C (68°F), with highs reaching up to 32°C (89°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec676971767674737474737068
Data source: Temperature data for Usumatlan 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 Usumatlan

In Usumatlan in December, the precipitation amount is 33 mm (1.3 in) over a period of 7 days.

December Precipitation Trends in Usumatlan

The chart displays monthly precipitation patterns in Usumatlan, 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 Usumatlan, December typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec272521431542871351841921869333
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Usumatlan

In Usumatlan in December humidity is 74%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting, prompting travelers to seek shade and hydration more often.

December Average Humidity in Usumatlan

This chart illustrates the average monthly humidity levels in Usumatlan, 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 Usumatlan is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%72%61%53%51%52%58%63%71%79%79%74%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Usumatlan

In Usumatlan 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 Usumatlan.

Maximum UV Index Levels in Usumatlan for December

The chart shows the monthly maximum UV Index (UVI) for Usumatlan 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 Usumatlan typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141414141312109
Data source: Usumatlan 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 Usumatlan Compares to Other Months

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

This table compares monthly weather conditions in Usumatlan, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather19°C (67°F)27 mm (1.1 inches)80%very high
February Weather21°C (70°F)25 mm (1.0 inches)72%extreme
March Weather22°C (71°F)21 mm (0.8 inches)61%extreme
April Weather24°C (76°F)43 mm (1.7 inches)53%extreme
May Weather25°C (77°F)154 mm (6.0 inches)51%extreme
June Weather24°C (75°F)287 mm (11.3 inches)52%extreme
July Weather23°C (73°F)135 mm (5.3 inches)58%extreme
August Weather23°C (74°F)184 mm (7.3 inches)63%extreme
September Weather23°C (74°F)192 mm (7.6 inches)71%extreme
October Weather23°C (73°F)186 mm (7.3 inches)79%extreme
November Weather21°C (70°F)93 mm (3.7 inches)79%very high
December Weather20°C (68°F)33 mm (1.3 inches)74%very high

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