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December Weather in Puerto Rico, Peru

Last updated: August 27, 2025

In December, the average temperature in Puerto Rico, Peru hovers around 26°C (79°F), with a comfortable minimum of 20°C (69°F) and a warm maximum of 35°C (95°F). Visitors can expect about 230 mm (9.0 in) of precipitation spread over 26 days, contributing to an average humidity of 89% that adds a touch of tropical vibrancy to the atmosphere.

December Temperature in Puerto Rico

In December in Puerto Rico, the average temperature is 26°C (79°F). Maximums can reach 35°C (95°F), while minimums can be as low as 20°C (69°F). This pleasant weather makes Puerto Rico an ideal destination for travelers looking to enjoy warm and inviting conditions.

December Weather in Puerto Rico: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Puerto Rico, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Puerto Rico, December typically has an average temperature of 26°C (79°F), with highs reaching up to 35°C (95°F) and lows dropping to around 20°C (69°F).
JanFebMarAprMayJunJulAugSepOctNovDec787878787777767779797979
Data source: Temperature data for Puerto Rico 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 Puerto Rico

In Puerto Rico in December, the total precipitation amount is 230 mm (9.0 in), spread over 26 days.

December Precipitation Trends in Puerto Rico

The chart displays monthly precipitation patterns in Puerto Rico, 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 Puerto Rico, December typically receives around 230 mm (9.0 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec2522493462532251761238379167261230
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Puerto Rico

In Puerto Rico in December, humidity is 89%. With an average temperature of 26°C (79°F), this humidity feels like walking through a warm, thick blanket, making it feel much hotter and more exhausting for traveling, as every step seems to weigh you down in the muggy air.

December Average Humidity in Puerto Rico

This chart illustrates the average monthly humidity levels in Puerto Rico, 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 Puerto Rico is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%76%81%86%86%70%47%37%42%62%76%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Puerto Rico

In Puerto Rico in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Puerto Rico, you can check here.

Maximum UV Index Levels in Puerto Rico for December

The chart shows the monthly maximum UV Index (UVI) for Puerto Rico 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 Puerto Rico typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616161312111214151414
Data source: Puerto Rico 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 Puerto Rico Compares to Other Months

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

This table compares monthly weather conditions in Puerto Rico, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (78°F)252 mm (9.9 inches)80%extreme
February Weather26°C (79°F)249 mm (9.8 inches)76%extreme
March Weather25°C (78°F)345 mm (13.6 inches)81%extreme
April Weather25°C (78°F)253 mm (10.0 inches)86%extreme
May Weather25°C (78°F)225 mm (8.9 inches)86%extreme
June Weather25°C (77°F)176 mm (6.9 inches)70%extreme
July Weather24°C (76°F)123 mm (4.8 inches)47%extreme
August Weather25°C (78°F)83 mm (3.3 inches)37%extreme
September Weather26°C (79°F)79 mm (3.1 inches)42%extreme
October Weather26°C (79°F)167 mm (6.6 inches)62%extreme
November Weather26°C (79°F)261 mm (10.3 inches)76%extreme
December Weather26°C (79°F)230 mm (9.0 inches)89%extreme

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