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December Weather in Cayuco, Puerto Rico

Last updated: August 31, 2025

The average temperature in Cayuco, Puerto Rico during December is a pleasant 24°C (76°F). Temperatures can vary, with a minimum of 19°C (66°F) and a warm maximum of 31°C (87°F). Expect some rain, as the area receives an average of 33 mm (1.3 in) of precipitation over 11 days. With an average humidity of 76%, it's a month that promises a mix of warmth and mild tropical air.

December Temperature in Cayuco

In December in Cayuco, the average temperature is 24°C (76°F), with maximums reaching up to 31°C (87°F) and minimums dipping as low as 19°C (66°F). This pleasant climate makes Cayuco an ideal destination for travelers seeking comfortable and enjoyable weather.

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

The chart illustrates December temperature patterns in Cayuco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cayuco, December typically has an average temperature of 24°C (76°F), with highs reaching up to 31°C (87°F) and lows dropping to around 19°C (66°F).
JanFebMarAprMayJunJulAugSepOctNovDec747575767879808079787776
Data source: Temperature data for Cayuco 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 Cayuco

In Cayuco in December, the precipitation amount is 33 mm (1.3 in) over the course of 11 days.

December Precipitation Trends in Cayuco

The chart displays monthly precipitation patterns in Cayuco, 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 Cayuco, December typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec3141889110910311011721516211433
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Cayuco

In Cayuco in December, humidity is 76%. With an average temperature of 24°C (76°F), this humidity feels like a warm embrace that can quickly lead to discomfort for traveling, making long walks and outdoor activities feel exhausting and sticky.

December Average Humidity in Cayuco

This chart illustrates the average monthly humidity levels in Cayuco, 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 Cayuco 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 Cayuco

In Cayuco 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 Cayuco.

Maximum UV Index Levels in Cayuco for December

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

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

This table compares monthly weather conditions in Cayuco, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)31 mm (1.2 inches)76%very high
February Weather24°C (75°F)41 mm (1.6 inches)75%extreme
March Weather24°C (75°F)88 mm (3.5 inches)74%extreme
April Weather24°C (76°F)91 mm (3.6 inches)75%extreme
May Weather25°C (78°F)109 mm (4.3 inches)75%extreme
June Weather26°C (79°F)103 mm (4.1 inches)77%extreme
July Weather27°C (80°F)110 mm (4.3 inches)80%extreme
August Weather27°C (80°F)117 mm (4.6 inches)80%extreme
September Weather26°C (80°F)215 mm (8.5 inches)79%extreme
October Weather26°C (79°F)162 mm (6.4 inches)78%extreme
November Weather25°C (77°F)114 mm (4.5 inches)78%very high
December Weather24°C (76°F)33 mm (1.3 inches)76%very high

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