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December Weather in Rio Lajas, Puerto Rico

Last updated: August 31, 2025

In December, the average temperature in Rio Lajas, Puerto Rico is a warm 26°C (78°F), with comfort levels fluctuating between a minimum of 22°C (73°F) and a maximum of 31°C (87°F). Expect 50 mm (2.0 in) of precipitation spread over 16 days, contributing to a notable average humidity of 76%. Whether you're planning outdoor activities or seeking respite from the heat, it's essential to consider these conditions for a delightful experience!

December Temperature in Rio Lajas

In December in Rio Lajas, the average temperature is 26°C (78°F), with maximums reaching 31°C (87°F) and minimums dropping to as low as 22°C (73°F). This pleasant climate makes Rio Lajas an ideal destination for travelers seeking warm weather and outdoor activities.

December Weather in Rio Lajas: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Rio Lajas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Lajas, December typically has an average temperature of 26°C (78°F), with highs reaching up to 31°C (87°F) and lows dropping to around 22°C (73°F).
JanFebMarAprMayJunJulAugSepOctNovDec777777788081828282818078
Data source: Temperature data for Rio Lajas 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 Rio Lajas

In Rio Lajas in December, the total precipitation amount is 50 mm (2.0 in) over the course of 16 days.

December Precipitation Trends in Rio Lajas

The chart displays monthly precipitation patterns in Rio Lajas, 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 Rio Lajas, December typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec39437255586276861721369350
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Rio Lajas

In Rio Lajas in December humidity is 76%. With an average temperature of 26°C (78°F), this humidity feels like a warm, tropical embrace, making travel feel like a stroll through a steamy rainforest, where the air clings to your skin and every step can leave you drenched, yet there's a certain charm in the lush scenery and vibrant life all around.

December Average Humidity in Rio Lajas

This chart illustrates the average monthly humidity levels in Rio Lajas, 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 Rio Lajas 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 Rio Lajas

In Rio Lajas 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 Rio Lajas.

Maximum UV Index Levels in Rio Lajas for December

The chart shows the monthly maximum UV Index (UVI) for Rio Lajas 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 Rio Lajas typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131314131313131298
Data source: Rio Lajas 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 Rio Lajas Compares to Other Months

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

This table compares monthly weather conditions in Rio Lajas, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)39 mm (1.5 inches)76%very high
February Weather25°C (77°F)43 mm (1.7 inches)75%extreme
March Weather25°C (77°F)72 mm (2.8 inches)74%extreme
April Weather26°C (78°F)55 mm (2.2 inches)75%extreme
May Weather27°C (80°F)58 mm (2.3 inches)75%extreme
June Weather27°C (81°F)62 mm (2.4 inches)77%extreme
July Weather28°C (82°F)76 mm (3.0 inches)80%extreme
August Weather28°C (82°F)86 mm (3.4 inches)80%extreme
September Weather28°C (82°F)172 mm (6.8 inches)79%extreme
October Weather27°C (81°F)136 mm (5.3 inches)78%extreme
November Weather26°C (80°F)93 mm (3.7 inches)78%very high
December Weather26°C (78°F)50 mm (2.0 inches)76%very high

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