nomadseason

May Weather in Puerto Rico, Mexico

Last updated: August 27, 2025

In May, the average temperature in Puerto Rico, Mexico reaches a warm 27°C (81°F), with lows dipping to 19°C (66°F) and highs soaring up to 39°C (102°F). Expect 97 mm (3.8 in) of precipitation spread over 17 days, contributing to an average humidity of 65%. Whether you're basking in the sun or caught in a refreshing shower, this month offers a blend of warmth and moisture.

May Temperature in Puerto Rico

In May in Puerto Rico, the average temperature is 27°C (81°F), with maximums reaching 39°C (102°F) and minimums dropping as low as 19°C (66°F). This climate makes Puerto Rico an ideal destination for travelers seeking warm weather and plenty of sunshine.

May Weather in Puerto Rico: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Puerto Rico, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Puerto Rico, May typically has an average temperature of 27°C (81°F), with highs reaching up to 39°C (102°F) and lows dropping to around 19°C (66°F).
JanFebMarAprMayJunJulAugSepOctNovDec727578818177797977767473
Data source: Temperature data for Puerto Rico generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Puerto Rico

In Puerto Rico in May, the precipitation amount is 97 mm (3.8 in) spread over 17 days.

May Precipitation Trends in Puerto Rico

The chart displays monthly precipitation patterns in Puerto Rico, 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 Puerto Rico, May typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec9541297223481062121973715
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Puerto Rico

In Puerto Rico in May, humidity is 65%. With an average temperature of 27°C (81°F), this humidity feels like a warm embrace, making travel feel both refreshing and slightly sticky as you explore the sights and sounds around you.

May Average Humidity in Puerto Rico

This chart illustrates the average monthly humidity levels in Puerto Rico, 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 Puerto Rico is approximately 65%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%68%59%57%65%66%75%82%82%83%80%76%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Puerto Rico

In Puerto Rico in May, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Puerto Rico, you can check here.

Maximum UV Index Levels in Puerto Rico for May

The chart shows the monthly maximum UV Index (UVI) for Puerto Rico 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 Puerto Rico typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141415141413109
Data source: Puerto Rico 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 Puerto Rico Compares to Other Months

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

This table compares monthly weather conditions in Puerto Rico, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (73°F)9 mm (0.4 inches)76%very high
February Weather24°C (75°F)5 mm (0.2 inches)68%extreme
March Weather25°C (78°F)4 mm (0.2 inches)59%extreme
April Weather27°C (81°F)12 mm (0.5 inches)57%extreme
May Weather27°C (81°F)97 mm (3.8 inches)65%extreme
June Weather25°C (78°F)223 mm (8.8 inches)66%extreme
July Weather26°C (79°F)48 mm (1.9 inches)75%extreme
August Weather26°C (79°F)106 mm (4.2 inches)82%extreme
September Weather25°C (77°F)212 mm (8.4 inches)82%extreme
October Weather24°C (76°F)197 mm (7.8 inches)83%extreme
November Weather24°C (75°F)37 mm (1.5 inches)80%very high
December Weather23°C (73°F)15 mm (0.6 inches)76%very high

Compare Puerto Rico's Climate with Cities Worldwide