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May Weather in Rio Santiago, Mexico

Last updated: August 27, 2025

In May, the average temperature in Rio Santiago, Mexico is a pleasant 24°C (76°F). Expect temperatures to range from a minimum of 17°C (63°F) to a maximum of 33°C (91°F). However, be prepared for some wet days, as precipitation averages 95 mm (3.7 in) over about 12 days. With an average humidity of 73%, it’s a time to enjoy the warmth while staying comfortable!

May Temperature in Rio Santiago

In May in Rio Santiago, the average temperature is 24°C (76°F). Maximums can reach 33°C (91°F), while minimums can dip as low as 17°C (63°F). This makes it an ideal time to visit Rio Santiago, offering warm days and comfortable evenings perfect for exploring the local attractions.

May Weather in Rio Santiago: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Rio Santiago, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Santiago, May typically has an average temperature of 24°C (76°F), with highs reaching up to 33°C (91°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec707173747574757474747270
Data source: Temperature data for Rio Santiago 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 Rio Santiago

In Rio Santiago in May, the precipitation amount is 95 mm (3.7 in) over the course of 12 days.

May Precipitation Trends in Rio Santiago

The chart displays monthly precipitation patterns in Rio Santiago, 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 Rio Santiago, May typically receives around 95 mm (3.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec12896953913024264533369223
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Rio Santiago

In Rio Santiago in May humidity is 73%. With an average temperature of 24°C (76°F), this humidity feels like a warm and sticky embrace, making travel slightly uncomfortable as the air thickens around you, prompting you to seek shade and stay hydrated.

May Average Humidity in Rio Santiago

This chart illustrates the average monthly humidity levels in Rio Santiago, 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 Rio Santiago is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec66%64%63%69%73%76%78%79%78%75%72%70%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Rio Santiago

In Rio Santiago 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 Rio Santiago.

Maximum UV Index Levels in Rio Santiago for May

The chart shows the monthly maximum UV Index (UVI) for Rio Santiago 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 Rio Santiago typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1011131413141313131298
Data source: Rio Santiago 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 Rio Santiago Compares to Other Months

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

This table compares monthly weather conditions in Rio Santiago, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (70°F)12 mm (0.5 inches)66%very high
February Weather22°C (71°F)8 mm (0.3 inches)64%extreme
March Weather23°C (73°F)9 mm (0.3 inches)63%extreme
April Weather23°C (74°F)6 mm (0.3 inches)69%extreme
May Weather24°C (76°F)95 mm (3.7 inches)73%extreme
June Weather23°C (74°F)391 mm (15.4 inches)76%extreme
July Weather24°C (75°F)302 mm (11.9 inches)78%extreme
August Weather23°C (75°F)426 mm (16.8 inches)79%extreme
September Weather23°C (74°F)453 mm (17.9 inches)78%extreme
October Weather23°C (74°F)336 mm (13.2 inches)75%extreme
November Weather22°C (73°F)92 mm (3.6 inches)72%very high
December Weather21°C (71°F)23 mm (0.9 inches)70%very high

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