January Weather in Guayanilla, Puerto Rico

Last updated: August 31, 2025

In January, the average temperature in Guayanilla, Puerto Rico is a delightful 24°C (76°F), with temperatures ranging from a minimum of 18°C (65°F) to a pleasant maximum of 28°C (83°F). Expect an average humidity of 76% throughout the month, accompanied by about 19 mm (0.8 in) of precipitation spread over 6 days.

January Temperature in Guayanilla

In January in Guayanilla, the average temperature is 24°C (76°F), with maximums reaching up to 28°C (83°F) and minimums dipping as low as 18°C (65°F). This pleasant weather makes it an ideal time for outdoor activities and exploration.

January Weather in Guayanilla: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Guayanilla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guayanilla, January typically has an average temperature of 24°C (76°F), with highs reaching up to 28°C (83°F) and lows dropping to around 18°C (65°F).

Data source: Temperature data for Guayanilla generated using information from the Copernicus Climate Change Service.

January Precipitation in Guayanilla

In Guayanilla in January, the total precipitation amount recorded is 19 mm (0.8 in) over the course of 6 days.

January Precipitation Trends in Guayanilla

The chart displays monthly precipitation patterns in Guayanilla, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Guayanilla, January typically receives around 19 mm (0.8 inches) of precipitation spread over approximately 6 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Guayanilla

In Guayanilla in January, 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.

January Average Humidity in Guayanilla

This chart illustrates the average monthly humidity levels in Guayanilla, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Guayanilla is approximately 76%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Guayanilla

In Guayanilla in January, 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 Guayanilla.

Maximum UV Index Levels in Guayanilla for January

The chart shows the monthly maximum UV Index (UVI) for Guayanilla in January, 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 January, the maximum UV index in Guayanilla typically reaches 9, which falls under the very high exposure category.

Data source: Guayanilla January 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 January Weather in Guayanilla Compares to Other Months

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

This table compares monthly weather conditions in Guayanilla, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (76°F)	19 mm (0.8 inches)	76%	very high
February Weather	24°C (76°F)	26 mm (1.0 inches)	75%	extreme
March Weather	24°C (76°F)	53 mm (2.1 inches)	75%	extreme
April Weather	25°C (76°F)	55 mm (2.1 inches)	76%	extreme
May Weather	25°C (78°F)	67 mm (2.6 inches)	76%	extreme
June Weather	26°C (80°F)	61 mm (2.4 inches)	78%	extreme
July Weather	27°C (80°F)	90 mm (3.5 inches)	81%	extreme
August Weather	27°C (81°F)	94 mm (3.7 inches)	80%	extreme
September Weather	27°C (80°F)	167 mm (6.6 inches)	79%	extreme
October Weather	26°C (79°F)	107 mm (4.2 inches)	78%	extreme
November Weather	26°C (78°F)	87 mm (3.4 inches)	78%	very high
December Weather	25°C (77°F)	25 mm (1.0 inches)	77%	very high