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May Weather in San Bartolo, Mexico

Last updated: August 27, 2025

In May, the average temperature in San Bartolo, Mexico hovers around 18°C (65°F), with a comfortable range from a minimum of 7°C (45°F) to a maximum of 31°C (88°F). Expect 87 mm (3.4 in) of precipitation spread over 17 days, contributing to an average humidity level of 82%. Whether you're exploring or relaxing, be prepared for a mix of warmth and wetness!

May Temperature in San Bartolo

In May in San Bartolo, the average temperature is 18°C (65°F). The maximum can reach 31°C (88°F), and the minimum can be as low as 7°C (45°F). This climate makes San Bartolo an ideal destination for travelers seeking mild weather and a variety of outdoor activities.

May Weather in San Bartolo: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in San Bartolo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Bartolo, May typically has an average temperature of 18°C (65°F), with highs reaching up to 31°C (88°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec535659636563626362605653
Data source: Temperature data for San Bartolo 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 Bartolo

In San Bartolo in May, the precipitation amount is 87 mm (3.4 in) over the course of 17 days.

May Precipitation Trends in San Bartolo

The chart displays monthly precipitation patterns in San Bartolo, 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 Bartolo, May typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec26254057871871451892121635118
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Bartolo

In San Bartolo in May, humidity is 82%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can quickly leave travelers feeling fatigued and in need of frequent breaks to stay refreshed and hydrated.

May Average Humidity in San Bartolo

This chart illustrates the average monthly humidity levels in San Bartolo, 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 Bartolo is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%86%83%80%82%79%72%74%84%92%91%91%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in San Bartolo

In San Bartolo 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 San Bartolo, you can check here.

Maximum UV Index Levels in San Bartolo for May

The chart shows the monthly maximum UV Index (UVI) for San Bartolo 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 Bartolo typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec811131414141414131298
Data source: San Bartolo 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 Bartolo Compares to Other Months

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

This table compares monthly weather conditions in San Bartolo, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (53°F)26 mm (1.0 inches)88%very high
February Weather13°C (57°F)25 mm (1.0 inches)86%extreme
March Weather15°C (60°F)40 mm (1.6 inches)83%extreme
April Weather17°C (63°F)57 mm (2.2 inches)80%extreme
May Weather18°C (65°F)87 mm (3.4 inches)82%extreme
June Weather17°C (64°F)187 mm (7.4 inches)79%extreme
July Weather17°C (63°F)145 mm (5.7 inches)72%extreme
August Weather17°C (63°F)189 mm (7.4 inches)74%extreme
September Weather17°C (62°F)212 mm (8.3 inches)84%extreme
October Weather15°C (60°F)163 mm (6.4 inches)92%extreme
November Weather13°C (56°F)51 mm (2.0 inches)91%very high
December Weather12°C (54°F)18 mm (0.7 inches)91%very high

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