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May Weather in San Lorenzo, Puerto Rico

Last updated: August 31, 2025

In May, the average temperature in San Lorenzo, Puerto Rico hovers around 26°C (79°F), with a comfortable minimum of 22°C (72°F) and a peak temperature reaching up to 31°C (87°F). However, be prepared for frequent showers, as the region experiences about 98 mm (3.9 in) of precipitation over 24 days. With an average humidity of 75%, it’s a month that balances warmth with an immersive tropical atmosphere.

May Temperature in San Lorenzo

In May in San Lorenzo, the average temperature is 26°C (79°F). Maximums can reach 31°C (87°F), while minimums can be as low as 22°C (72°F). This pleasant climate makes it an ideal time for traveling and exploring all the attractions that San Lorenzo has to offer.

May Weather in San Lorenzo: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in San Lorenzo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Lorenzo, May typically has an average temperature of 26°C (79°F), with highs reaching up to 31°C (87°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec757575777980818181807877
Data source: Temperature data for San Lorenzo 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 San Lorenzo

In San Lorenzo in May, the precipitation amount is 98 mm (3.9 in) distributed over 24 days.

May Precipitation Trends in San Lorenzo

The chart displays monthly precipitation patterns in San Lorenzo, 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 San Lorenzo, May typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec485380779810012413020018312066
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Lorenzo

In San Lorenzo 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 San Lorenzo

This chart illustrates the average monthly humidity levels in San Lorenzo, 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 San Lorenzo 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 San Lorenzo

In San Lorenzo 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 San Lorenzo, you can check here.

Maximum UV Index Levels in San Lorenzo for May

The chart shows the monthly maximum UV Index (UVI) for San Lorenzo 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 San Lorenzo typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131314131213131298
Data source: San Lorenzo 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 San Lorenzo Compares to Other Months

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

This table compares monthly weather conditions in San Lorenzo, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)48 mm (1.9 inches)76%very high
February Weather24°C (75°F)53 mm (2.1 inches)75%extreme
March Weather24°C (76°F)80 mm (3.2 inches)74%extreme
April Weather25°C (77°F)77 mm (3.0 inches)75%extreme
May Weather26°C (79°F)98 mm (3.9 inches)75%extreme
June Weather27°C (80°F)99 mm (3.9 inches)77%extreme
July Weather27°C (81°F)124 mm (4.9 inches)80%extreme
August Weather27°C (81°F)130 mm (5.1 inches)80%extreme
September Weather27°C (81°F)200 mm (7.9 inches)79%extreme
October Weather27°C (80°F)183 mm (7.2 inches)78%extreme
November Weather26°C (79°F)120 mm (4.7 inches)78%very high
December Weather25°C (77°F)66 mm (2.6 inches)76%very high

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