January Weather in Bartolo, Puerto Rico

Last updated: August 31, 2025

In Bartolo, Puerto Rico, the average temperature in January hovers around 25°C (77°F), offering a pleasant climate for outdoor activities. You'll experience a minimum of 21°C (70°F) and a maximum of 28°C (83°F), making it a perfect month for exploring. However, be prepared for some precipitation, with an average of 57 mm (2.3 in) spread over 17 days. The average humidity sits at a comfortable 76%, ensuring a warm yet enjoyable atmosphere.

January Temperature in Bartolo

In January in Bartolo, the average temperature is 25°C (77°F). The maximum can reach 28°C (83°F) and the minimum can be as low as 21°C (70°F). This makes Bartolo a delightful destination for travelers looking to enjoy mild and pleasant weather during this time.

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

The chart illustrates January temperature patterns in Bartolo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bartolo, January typically has an average temperature of 25°C (77°F), with highs reaching up to 28°C (83°F) and lows dropping to around 21°C (70°F).

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

January Precipitation in Bartolo

In Bartolo in January, the total precipitation amount is 57 mm (2.3 in) over the course of 17 days.

January Precipitation Trends in Bartolo

The chart displays monthly precipitation patterns in Bartolo, 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 Bartolo, January typically receives around 57 mm (2.3 inches) of precipitation spread over approximately 17 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 Bartolo

In Bartolo in January, 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.

January Average Humidity in Bartolo

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

In Bartolo 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 Bartolo.

Maximum UV Index Levels in Bartolo for January

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

Data source: Bartolo 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 Bartolo Compares to Other Months

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

This table compares monthly weather conditions in Bartolo, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (77°F)	57 mm (2.3 inches)	76%	very high
February Weather	24°C (76°F)	61 mm (2.4 inches)	75%	extreme
March Weather	25°C (76°F)	78 mm (3.1 inches)	74%	extreme
April Weather	25°C (77°F)	79 mm (3.1 inches)	75%	extreme
May Weather	26°C (79°F)	109 mm (4.3 inches)	75%	extreme
June Weather	27°C (80°F)	110 mm (4.3 inches)	77%	extreme
July Weather	27°C (81°F)	149 mm (5.9 inches)	80%	extreme
August Weather	27°C (82°F)	153 mm (6.0 inches)	80%	extreme
September Weather	27°C (82°F)	195 mm (7.7 inches)	79%	extreme
October Weather	27°C (81°F)	187 mm (7.4 inches)	78%	extreme
November Weather	26°C (80°F)	131 mm (5.2 inches)	78%	very high
December Weather	26°C (78°F)	81 mm (3.2 inches)	76%	very high