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May Weather in San Isidro, Mexico

Last updated: August 27, 2025

In May, the average temperature in San Isidro, Mexico is a pleasant 26°C (79°F). However, temperatures can range from a cool 16°C (61°F) to a scorching 37°C (99°F). Rainfall is moderate, with an average precipitation of 73 mm (2.9 in) over 14 days, and the climate maintains a humidity level of 77%.

May Temperature in San Isidro

In May in San Isidro, the average temperature is 26°C (79°F). Maximums can reach 37°C (99°F), while minimums can dip as low as 16°C (61°F). This variety in temperatures makes it a perfect time for travelers to enjoy both the warm days and cooler evenings.

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

The chart illustrates May temperature patterns in San Isidro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Isidro, May typically has an average temperature of 26°C (79°F), with highs reaching up to 37°C (99°F) and lows dropping to around 16°C (61°F).
JanFebMarAprMayJunJulAugSepOctNovDec687276797975747372727068
Data source: Temperature data for San Isidro 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 Isidro

In San Isidro in May, the total precipitation amount is 73 mm (2.9 in) over the course of 14 days.

May Precipitation Trends in San Isidro

The chart displays monthly precipitation patterns in San Isidro, 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 Isidro, May typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec3231073279217307352185313
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Isidro

In San Isidro in May humidity is 77%. With an average temperature of 26°C (79°F), this humidity feels like walking through a warm, thick fog that clings to your skin, making every step feel heavier and more exhausting while exploring the sights.

May Average Humidity in San Isidro

This chart illustrates the average monthly humidity levels in San Isidro, 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 Isidro 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 San Isidro

In San Isidro 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 San Isidro.

Maximum UV Index Levels in San Isidro for May

The chart shows the monthly maximum UV Index (UVI) for San Isidro 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 Isidro typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec912131413141413141198
Data source: San Isidro 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 Isidro Compares to Other Months

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

This table compares monthly weather conditions in San Isidro, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (68°F)3 mm (0.1 inches)84%very high
February Weather22°C (72°F)2 mm (0.1 inches)78%extreme
March Weather25°C (76°F)3 mm (0.1 inches)75%extreme
April Weather26°C (79°F)10 mm (0.4 inches)70%extreme
May Weather26°C (79°F)73 mm (2.9 inches)77%extreme
June Weather24°C (75°F)279 mm (11.0 inches)76%extreme
July Weather23°C (74°F)217 mm (8.5 inches)68%extreme
August Weather23°C (74°F)307 mm (12.1 inches)70%extreme
September Weather22°C (73°F)352 mm (13.9 inches)82%extreme
October Weather22°C (72°F)185 mm (7.3 inches)91%extreme
November Weather21°C (70°F)31 mm (1.2 inches)89%very high
December Weather20°C (68°F)3 mm (0.1 inches)88%very high

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