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May Weather in San Luis, United States

Last updated: June 24, 2025

In San Luis, United States, the average temperature in May is a warm 27°C (81°F). Expect a range where the minimum can dip to 12°C (53°F) and the maximum might soar to a sizzling 43°C (110°F). With only 1 mm (0.0 in) of precipitation over 0 days, and an average humidity of just 33%, this month offers a dry and sunny experience perfect for outdoor activities!

May Temperature in San Luis

In May in San Luis, the average temperature is 27°C (81°F). Maximums can reach 43°C (110°F), and minimums can be as low as 12°C (53°F). Prepare for warm days and cool nights, making it a great time for outdoor adventures and comfortable evenings.

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 27°C (81°F), with highs reaching up to 43°C (110°F) and lows dropping to around 12°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec596167768190959689776858
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 1 mm (0.0 in) during a span of 0 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 1 mm (0.0 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec915193106620889
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 33%. With an average temperature of 27°C (81°F), this humidity feels like a comfortable breeze on a warm day, making it quite pleasant for traveling and exploring the surroundings.

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 33%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%76%65%50%33%28%28%33%50%61%70%78%
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.
JanFebMarAprMayJunJulAugSepOctNovDec469101112121110854
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 Weather15°C (59°F)9 mm (0.4 inches)73%moderate
February Weather16°C (61°F)15 mm (0.6 inches)76%high
March Weather20°C (68°F)19 mm (0.7 inches)65%very high
April Weather24°C (76°F)3 mm (0.1 inches)50%very high
May Weather27°C (81°F)1 mm (0.0 inches)33%extreme
June Weather32°C (90°F)0 mm (0.0 inches)28%extreme
July Weather35°C (96°F)6 mm (0.2 inches)28%extreme
August Weather35°C (96°F)6 mm (0.2 inches)33%extreme
September Weather32°C (89°F)20 mm (0.8 inches)50%very high
October Weather25°C (78°F)8 mm (0.3 inches)61%very high
November Weather20°C (68°F)8 mm (0.3 inches)70%moderate
December Weather14°C (58°F)9 mm (0.4 inches)78%moderate

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