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May Weather in Rio Santiago, Mexico

Last updated: August 26, 2025

In Rio Santiago, Mexico, the average temperature in May hovers around 22°C (72°F), with a minimum of 13°C (56°F) and a maximum reaching up to 34°C (93°F). Expect 181 mm (7.1 in) of precipitation spread over 25 days, contributing to an average humidity of 72%. Prepare for a mix of warm days and potential rain!

May Temperature in Rio Santiago

In May in Rio Santiago, the average temperature is 22°C (72°F). Maximum temperatures can reach 34°C (93°F), while minimums can drop as low as 13°C (56°F). This pleasant climate makes Rio Santiago an ideal destination for travelers seeking a comfortable and enjoyable experience.

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 22°C (72°F), with highs reaching up to 34°C (93°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec616366707270697070686461
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 181 mm (7.1 in) spread over a period of 25 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 181 mm (7.1 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec96838712418137523932240232817672
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 72%. With an average temperature of 22°C (72°F), this humidity feels like you are stepping into a warm, embracing blanket, making traveling feel sweaty and slightly stifling, but the balmy weather is also quite perfect for exploring local attractions.

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 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%80%73%67%72%73%76%80%84%89%88%88%
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 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 Rio Santiago, you can check here.

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 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121314141415131412109
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 Weather16°C (61°F)96 mm (3.8 inches)84%very high
February Weather17°C (64°F)83 mm (3.3 inches)80%extreme
March Weather19°C (66°F)87 mm (3.4 inches)73%extreme
April Weather21°C (70°F)124 mm (4.9 inches)67%extreme
May Weather22°C (72°F)181 mm (7.1 inches)72%extreme
June Weather21°C (71°F)375 mm (14.8 inches)73%extreme
July Weather21°C (70°F)239 mm (9.4 inches)76%extreme
August Weather21°C (70°F)322 mm (12.7 inches)80%extreme
September Weather21°C (70°F)402 mm (15.8 inches)84%extreme
October Weather20°C (68°F)328 mm (12.9 inches)89%extreme
November Weather18°C (64°F)176 mm (6.9 inches)88%very high
December Weather16°C (62°F)72 mm (2.8 inches)88%very high

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