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May Weather in Santo Tomas, Mexico

Last updated: August 27, 2025

In Santo Tomas, Mexico, the average temperature in May hovers around 17°C (63°F), creating a pleasant climate. However, temperatures can vary significantly, with a minimum of 5°C (41°F) and a maximum of 29°C (84°F). During this month, you can expect about 57 mm (2.2 in) of precipitation spread over 13 days, contributing to an average humidity of 77%.

May Temperature in Santo Tomas

In May in Santo Tomas, the average temperature is 17°C (63°F). Maximum temperatures can reach 29°C (84°F) and minimums can be as low as 5°C (41°F). This range makes it an ideal time for travelers to enjoy a comfortable climate while exploring all that Santo Tomas has to offer.

May Weather in Santo Tomas: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Santo Tomas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santo Tomas, May typically has an average temperature of 17°C (63°F), with highs reaching up to 29°C (84°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec525558616361606059575452
Data source: Temperature data for Santo Tomas 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 Santo Tomas

In Santo Tomas in May, the precipitation amount is 57 mm (2.2 in) over the course of 13 days.

May Precipitation Trends in Santo Tomas

The chart displays monthly precipitation patterns in Santo Tomas, 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 Santo Tomas, May typically receives around 57 mm (2.2 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec1412244257155126162173105297
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Santo Tomas

In Santo Tomas in May, humidity is 77%. With an average temperature of 17°C (63°F), this humidity feels like a cozy blanket wrapped around you, creating a muggy atmosphere that can be a bit uncomfortable for traveling, making you want to seek shade and hydration as you explore.

May Average Humidity in Santo Tomas

This chart illustrates the average monthly humidity levels in Santo Tomas, 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 Santo Tomas is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%78%75%71%77%76%68%70%82%91%89%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Santo Tomas

In Santo Tomas in May, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Santo Tomas.

Maximum UV Index Levels in Santo Tomas for May

The chart shows the monthly maximum UV Index (UVI) for Santo Tomas 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 Santo Tomas typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9121415151515141413108
Data source: Santo Tomas 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 Santo Tomas Compares to Other Months

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

This table compares monthly weather conditions in Santo Tomas, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)14 mm (0.6 inches)84%very high
February Weather13°C (55°F)12 mm (0.5 inches)78%extreme
March Weather14°C (58°F)24 mm (0.9 inches)75%extreme
April Weather16°C (61°F)42 mm (1.7 inches)70%extreme
May Weather17°C (63°F)57 mm (2.2 inches)77%extreme
June Weather16°C (61°F)155 mm (6.1 inches)76%extreme
July Weather15°C (60°F)126 mm (5.0 inches)68%extreme
August Weather15°C (60°F)162 mm (6.4 inches)70%extreme
September Weather15°C (60°F)173 mm (6.8 inches)82%extreme
October Weather14°C (58°F)105 mm (4.1 inches)91%extreme
November Weather12°C (54°F)29 mm (1.1 inches)89%very high
December Weather11°C (52°F)7 mm (0.3 inches)88%very high

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