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May Weather in San Luis, Mexico

Last updated: August 27, 2025

In May, the average temperature in San Luis, Mexico hovers around 16°C (61°F), providing a pleasant climate for outdoor activities. Expect a minimum temperature of 11°C (52°F) and a maximum of 24°C (76°F). Precipitation is relatively low, with about 26 mm (1.0 in) of rainfall spread over 6 days, while the average humidity rests at a comfortable 46%.

May Temperature in San Luis

In May in San Luis, the average temperature is 16°C (61°F). Maximums can reach 24°C (76°F), while minimums can be as low as 11°C (52°F). This mild climate makes it an ideal destination for travelers seeking comfortable weather and outdoor activities.

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

The chart illustrates May temperature patterns in San Luis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Luis, May typically has an average temperature of 16°C (61°F), with highs reaching up to 24°C (76°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec575657606164697169676257
Data source: Temperature data for San Luis 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 Luis

In San Luis in May, the precipitation amount is 26 mm (1.0 in) over the course of 6 days.

May Precipitation Trends in San Luis

The chart displays monthly precipitation patterns in San Luis, 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 Luis, May typically receives around 26 mm (1.0 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec60755727267556143568
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Luis

In San Luis in May, humidity is 46%. With an average temperature of 16°C (61°F), this humidity feels like a refreshing, mildly cool environment for traveling, where the air is crisp enough to keep you comfortable while exploring the sights without feeling stifling or oppressive.

May Average Humidity in San Luis

This chart illustrates the average monthly humidity levels in San Luis, 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 Luis is approximately 46%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%77%67%56%46%48%46%42%52%58%66%74%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in San Luis

In San Luis in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in San Luis.

Maximum UV Index Levels in San Luis for May

The chart shows the monthly maximum UV Index (UVI) for San Luis 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 Luis typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110754
Data source: San Luis 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 Luis Compares to Other Months

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

This table compares monthly weather conditions in San Luis, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather14°C (57°F)60 mm (2.3 inches)72%moderate
February Weather13°C (56°F)75 mm (3.0 inches)77%high
March Weather14°C (57°F)57 mm (2.2 inches)67%very high
April Weather15°C (60°F)27 mm (1.1 inches)56%very high
May Weather16°C (61°F)26 mm (1.0 inches)46%extreme
June Weather18°C (65°F)7 mm (0.3 inches)48%extreme
July Weather21°C (69°F)5 mm (0.2 inches)46%extreme
August Weather21°C (71°F)5 mm (0.2 inches)42%extreme
September Weather21°C (70°F)6 mm (0.2 inches)52%very high
October Weather19°C (67°F)14 mm (0.6 inches)58%high
November Weather17°C (62°F)35 mm (1.4 inches)66%moderate
December Weather14°C (58°F)68 mm (2.7 inches)74%moderate

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