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May Weather in Santo Tomas, Mexico

Last updated: August 27, 2025

In May, the average temperature in Santo Tomas, Mexico is a pleasant 18°C (65°F), with a range that can dip as low as 2°C (35°F) or rise to a warm 33°C (91°F). Expect a light precipitation of about 6 mm (0.2 in) over the course of 1 day, while enjoying a comfortable average humidity level of 39%. Perfect weather for exploring!

May Temperature in Santo Tomas

In May in Santo Tomas, the average temperature is 18°C (65°F). The maximum can reach 33°C (91°F), while the minimum can be as low as 2°C (35°F). Pack accordingly for a varied climate to fully enjoy your trip to Santo Tomas.

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 18°C (65°F), with highs reaching up to 33°C (91°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec434652596571676663595143
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 6 mm (0.2 in) over the course of 1 day.

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 6 mm (0.2 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec131516363019015176302116
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 39%. With an average temperature of 18°C (65°F), this humidity feels refreshingly comfortable for traveling, creating a pleasant atmosphere that invites exploration and adventure.

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 39%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%69%63%50%39%36%60%78%82%76%80%85%
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 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 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 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec69111313141313121086
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 Weather6°C (43°F)13 mm (0.5 inches)78%high
February Weather8°C (46°F)15 mm (0.6 inches)69%very high
March Weather11°C (52°F)16 mm (0.6 inches)63%extreme
April Weather15°C (59°F)2 mm (0.1 inches)49%extreme
May Weather18°C (65°F)6 mm (0.2 inches)39%extreme
June Weather22°C (71°F)30 mm (1.2 inches)36%extreme
July Weather19°C (67°F)190 mm (7.5 inches)60%extreme
August Weather19°C (66°F)151 mm (5.9 inches)78%extreme
September Weather17°C (63°F)76 mm (3.0 inches)82%extreme
October Weather15°C (59°F)30 mm (1.2 inches)76%very high
November Weather11°C (51°F)21 mm (0.8 inches)80%very high
December Weather6°C (44°F)16 mm (0.6 inches)85%high

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