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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 comfortable 21°C (71°F). Expect a range from a cool 9°C (48°F) to a warm 34°C (94°F). During this month, the area sees an average precipitation of 46 mm (1.8 in) spread over 7 days, with humidity levels around 75%. Prepare for a mix of pleasant warmth and occasional showers!

May Temperature in San Isidro

In May in San Isidro, the average temperature is 21°C (71°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 9°C (48°F). This range makes it an ideal time for travelers to experience a variety of outdoor activities, from sunny adventures to cooler evening strolls.

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 21°C (71°F), with highs reaching up to 34°C (94°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec545863677170697067655954
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 46 mm (1.8 in) over the course of 7 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 46 mm (1.8 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec111015244648843375441214
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 21°C (71°F), this humidity feels like a warm blanket wrapping around you, making travel slightly uncomfortable but offering a lush, vibrant atmosphere that invites exploration at a leisurely pace.

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.
JanFebMarAprMayJunJulAugSepOctNovDec75%69%65%64%75%78%67%64%82%86%87%87%
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.
JanFebMarAprMayJunJulAugSepOctNovDec811131414141414131297
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 Weather12°C (54°F)11 mm (0.4 inches)75%very high
February Weather15°C (59°F)9 mm (0.4 inches)69%extreme
March Weather17°C (64°F)15 mm (0.6 inches)65%extreme
April Weather20°C (67°F)24 mm (0.9 inches)64%extreme
May Weather21°C (71°F)46 mm (1.8 inches)75%extreme
June Weather21°C (71°F)48 mm (1.9 inches)78%extreme
July Weather21°C (69°F)84 mm (3.3 inches)67%extreme
August Weather21°C (70°F)33 mm (1.3 inches)64%extreme
September Weather20°C (67°F)75 mm (3.0 inches)81%extreme
October Weather18°C (65°F)44 mm (1.7 inches)85%extreme
November Weather15°C (59°F)12 mm (0.5 inches)87%very high
December Weather12°C (55°F)14 mm (0.5 inches)87%high

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