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May Weather in San Isidro, Mexico

Last updated: August 27, 2025

In San Isidro, Mexico, the average temperature in May is a mild 19°C (67°F). Expect a minimum of 9°C (48°F) and a maximum of 31°C (88°F) throughout the month. With 91 mm (3.6 in) of precipitation spread over 12 days, don’t forget your umbrella! The average humidity sits at a comfortable 75%, making for a pleasant atmosphere overall.

May Temperature in San Isidro

In May in San Isidro, the average temperature is 19°C (67°F). The maximum can reach 31°C (88°F), and the minimum can be as low as 9°C (48°F). This makes it an ideal time for travelers who enjoy mild weather with warm days and cooler nights.

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 19°C (67°F), with highs reaching up to 31°C (88°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec565963656765636363625957
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 precipitation amount is 91 mm (3.6 in) over a period of 12 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 91 mm (3.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec19272613912784364403761665513
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 75%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making travel invigorating yet slightly sticky, as you navigate through the vibrant streets or scenic landscapes.

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 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%64%54%61%75%83%83%85%85%79%76%75%
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 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 Isidro, you can check here.

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 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911141414141313141198
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 Weather14°C (57°F)19 mm (0.8 inches)70%very high
February Weather15°C (59°F)27 mm (1.1 inches)64%extreme
March Weather17°C (63°F)26 mm (1.0 inches)54%extreme
April Weather19°C (66°F)13 mm (0.5 inches)61%extreme
May Weather19°C (67°F)91 mm (3.6 inches)75%extreme
June Weather18°C (66°F)278 mm (10.9 inches)83%extreme
July Weather17°C (63°F)436 mm (17.2 inches)83%extreme
August Weather17°C (64°F)440 mm (17.3 inches)85%extreme
September Weather17°C (63°F)376 mm (14.8 inches)85%extreme
October Weather17°C (63°F)166 mm (6.5 inches)79%extreme
November Weather15°C (60°F)55 mm (2.2 inches)76%very high
December Weather14°C (57°F)13 mm (0.5 inches)74%very high

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