nomadseason

May Weather in San Guillermo, Mexico

Last updated: August 27, 2025

In San Guillermo, Mexico, the average temperature in May hovers around 25°C (77°F). However, be prepared for a range, as temperatures can dip to a cool 7°C (45°F) or soar to a sizzling 38°C (101°F). With an average humidity of 49%, the climate offers a comfortable balance. Expect light precipitation with around 6 mm (0.2 in) of rainfall over approximately 1 day. 🌤️

May Temperature in San Guillermo

In May in San Guillermo, the average temperature is 25°C (77°F), with maximums reaching 38°C (101°F) and minimums dipping as low as 7°C (45°F). This varied temperature range makes San Guillermo an ideal destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates May temperature patterns in San Guillermo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Guillermo, May typically has an average temperature of 25°C (77°F), with highs reaching up to 38°C (101°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec515663707782797872675951
Data source: Temperature data for San Guillermo generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in San Guillermo

In San Guillermo in May, the precipitation amount is 6 mm (0.2 in) over the course of 1 day.

May Precipitation Trends in San Guillermo

The chart displays monthly precipitation patterns in San Guillermo, 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 Guillermo, May typically receives around 6 mm (0.2 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec6545630796687341418
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in San Guillermo

In San Guillermo in May, humidity is 49%. With an average temperature of 25°C (77°F), this humidity feels like a warm, pleasant embrace, making it ideal for exploring the surroundings while occasionally seeking shade or a refreshing drink to stay comfortable.

May Average Humidity in San Guillermo

This chart illustrates the average monthly humidity levels in San Guillermo, 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 Guillermo is approximately 49%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%71%60%52%49%50%65%70%79%77%83%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in San Guillermo

In San Guillermo 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 Guillermo.

Maximum UV Index Levels in San Guillermo for May

The chart shows the monthly maximum UV Index (UVI) for San Guillermo 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 Guillermo typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec69111313131313121086
Data source: San Guillermo 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 Guillermo Compares to Other Months

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

This table compares monthly weather conditions in San Guillermo, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (51°F)6 mm (0.2 inches)78%high
February Weather13°C (56°F)5 mm (0.2 inches)71%very high
March Weather17°C (63°F)4 mm (0.2 inches)60%extreme
April Weather21°C (70°F)5 mm (0.2 inches)52%extreme
May Weather25°C (77°F)6 mm (0.2 inches)49%extreme
June Weather28°C (83°F)30 mm (1.2 inches)50%extreme
July Weather26°C (79°F)79 mm (3.1 inches)65%extreme
August Weather25°C (78°F)66 mm (2.6 inches)70%extreme
September Weather22°C (73°F)87 mm (3.4 inches)79%extreme
October Weather19°C (67°F)34 mm (1.3 inches)77%very high
November Weather15°C (60°F)14 mm (0.6 inches)83%very high
December Weather11°C (51°F)18 mm (0.7 inches)84%high

Compare San Guillermo's Climate with Cities Worldwide