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May Weather in Bartolo, Puerto Rico

Last updated: August 31, 2025

In May, the average temperature in Bartolo, Puerto Rico is a warm 26°C (79°F). Temperatures can dip to a minimum of 23°C (73°F) and peak at a balmy 29°C (85°F). However, be prepared for some rain, as the area receives an average precipitation of 109 mm (4.3 in) over 26 days, contributing to the average humidity of 75%.

May Temperature in Bartolo

In May in Bartolo, the average temperature is 26°C (79°F). Maximums can reach 29°C (85°F), while minimums can drop to as low as 23°C (73°F). This pleasant climate makes Bartolo an ideal destination for travelers looking to enjoy mild, inviting weather.

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

The chart illustrates May 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, May typically has an average temperature of 26°C (79°F), with highs reaching up to 29°C (85°F) and lows dropping to around 23°C (73°F).
JanFebMarAprMayJunJulAugSepOctNovDec767676777980818181817978
Data source: Temperature data for Bartolo 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.

May Precipitation in Bartolo

In Bartolo in May, the precipitation amount is 109 mm (4.3 in) occurring over the course of 26 days.

May Precipitation Trends in Bartolo

The chart displays monthly precipitation patterns in Bartolo, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Bartolo, May typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec5761787910911014915319618713281
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Bartolo

In Bartolo in May, humidity is 75%. With an average temperature of 26°C (79°F), this humidity feels like a warm blanket wrapped around you, making traveling a sticky experience where every step requires extra effort and frequent breaks to cool off.

May Average Humidity in Bartolo

This chart illustrates the average monthly humidity levels in Bartolo, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Bartolo is approximately 75%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Bartolo

In Bartolo in May, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Bartolo.

Maximum UV Index Levels in Bartolo for May

The chart shows the monthly maximum UV Index (UVI) for Bartolo in May, 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 May, the maximum UV index in Bartolo typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131313131213141298
Data source: Bartolo May 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 May 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 May’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 May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)57 mm (2.3 inches)76%very high
February Weather24°C (76°F)61 mm (2.4 inches)75%extreme
March Weather25°C (76°F)78 mm (3.1 inches)74%extreme
April Weather25°C (77°F)79 mm (3.1 inches)75%extreme
May Weather26°C (79°F)109 mm (4.3 inches)75%extreme
June Weather27°C (80°F)110 mm (4.3 inches)77%extreme
July Weather27°C (81°F)149 mm (5.9 inches)80%extreme
August Weather27°C (82°F)153 mm (6.0 inches)80%extreme
September Weather27°C (82°F)195 mm (7.7 inches)79%extreme
October Weather27°C (81°F)187 mm (7.4 inches)78%extreme
November Weather26°C (80°F)131 mm (5.2 inches)78%very high
December Weather26°C (78°F)81 mm (3.2 inches)76%very high

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