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December Weather in Trujillo Alto, Puerto Rico

Last updated: August 31, 2025

In Trujillo Alto, Puerto Rico, the average temperature in December hovers around 25°C (77°F), with a minimum of 21°C (71°F) and a maximum reaching 30°C (86°F). Expect an average precipitation of 66 mm (2.6 in) spread over 22 days, while the humidity remains comfortably high at 76%. Enjoy the mild weather and prepare for occasional showers!

December Temperature in Trujillo Alto

In December in Trujillo Alto, the average temperature is 25°C (77°F). Maximum can reach 30°C (86°F) and minimum can be as low as 21°C (71°F). This makes it an ideal time for travelers seeking warm weather and outdoor activities.

December Weather in Trujillo Alto: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Trujillo Alto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trujillo Alto, December typically has an average temperature of 25°C (77°F), with highs reaching up to 30°C (86°F) and lows dropping to around 21°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec757575777980818181807877
Data source: Temperature data for Trujillo Alto 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 Trujillo Alto

In Trujillo Alto in December, the total precipitation amount is 66 mm (2.6 in) spread over 22 days.

December Precipitation Trends in Trujillo Alto

The chart displays monthly precipitation patterns in Trujillo Alto, 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 Trujillo Alto, December typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec485380779810012413020018312066
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Trujillo Alto

In Trujillo Alto in December, humidity is 76%. With an average temperature of 25°C (77°F), this humidity feels like a warm, heavy blanket wrapping around you, making traveling feel muggy and requiring frequent breaks to stay refreshed.

December Average Humidity in Trujillo Alto

This chart illustrates the average monthly humidity levels in Trujillo Alto, 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 Trujillo Alto is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%75%74%75%75%77%80%80%79%78%78%76%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Trujillo Alto

In Trujillo Alto 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 Trujillo Alto.

Maximum UV Index Levels in Trujillo Alto for December

The chart shows the monthly maximum UV Index (UVI) for Trujillo Alto 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 Trujillo Alto typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131314131213131298
Data source: Trujillo Alto 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 Trujillo Alto Compares to Other Months

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

This table compares monthly weather conditions in Trujillo Alto, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)48 mm (1.9 inches)76%very high
February Weather24°C (75°F)53 mm (2.1 inches)75%extreme
March Weather24°C (76°F)80 mm (3.2 inches)74%extreme
April Weather25°C (77°F)77 mm (3.0 inches)75%extreme
May Weather26°C (79°F)98 mm (3.9 inches)75%extreme
June Weather27°C (80°F)99 mm (3.9 inches)77%extreme
July Weather27°C (81°F)124 mm (4.9 inches)80%extreme
August Weather27°C (81°F)130 mm (5.1 inches)80%extreme
September Weather27°C (81°F)200 mm (7.9 inches)79%extreme
October Weather27°C (80°F)183 mm (7.2 inches)78%extreme
November Weather26°C (79°F)120 mm (4.7 inches)78%very high
December Weather25°C (77°F)66 mm (2.6 inches)76%very high

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