May Weather in Hermosillo, Mexico

Last updated: August 27, 2025

In Hermosillo, Mexico, the average temperature in May hovers around 27°C (81°F). However, it can swing from a cool 12°C (54°F) to a sizzling 42°C (108°F). Interestingly, precipitation is absent, with 0 mm (0.0 in) recorded over 0 days, and the average humidity sits at a comfortable 36%.

May Temperature in Hermosillo

In May in Hermosillo, the average temperature is 27°C (81°F). The maximum can reach 42°C (108°F), and the minimum can be as low as 12°C (54°F). Therefore, travelers should be prepared for a wide range of temperatures, making it essential to pack both light clothing for the heat and warmer layers for cooler evenings.

May Weather in Hermosillo: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Hermosillo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hermosillo, May typically has an average temperature of 27°C (81°F), with highs reaching up to 42°C (108°F) and lows dropping to around 12°C (54°F).

Data source: Temperature data for Hermosillo generated using information from the Copernicus Climate Change Service.

May Precipitation in Hermosillo

In Hermosillo in May, the precipitation amount is 0 mm (0.0 in) during 0 days.

May Precipitation Trends in Hermosillo

The chart displays monthly precipitation patterns in Hermosillo, 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 Hermosillo, May typically receives around 0 mm (0.0 inches) of precipitation spread over approximately 0 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Hermosillo

In Hermosillo in May, humidity is 36%. With an average temperature of 27°C (81°F), this humidity feels like a comfortable and pleasant atmosphere for traveling, making it easy to explore the sights without feeling overly sticky or fatigued.

May Average Humidity in Hermosillo

This chart illustrates the average monthly humidity levels in Hermosillo, 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 Hermosillo is approximately 36%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Hermosillo

In Hermosillo in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Hermosillo.

Maximum UV Index Levels in Hermosillo for May

The chart shows the monthly maximum UV Index (UVI) for Hermosillo 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 Hermosillo typically reaches 12, which falls under the extreme exposure category.

Data source: Hermosillo 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 Hermosillo Compares to Other Months

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

This table compares monthly weather conditions in Hermosillo, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	16°C (62°F)	17 mm (0.7 inches)	76%	moderate
February Weather	18°C (64°F)	14 mm (0.6 inches)	68%	very high
March Weather	20°C (69°F)	13 mm (0.5 inches)	56%	very high
April Weather	25°C (77°F)	0 mm (0.0 inches)	42%	extreme
May Weather	27°C (81°F)	0 mm (0.0 inches)	36%	extreme
June Weather	32°C (90°F)	5 mm (0.2 inches)	33%	extreme
July Weather	33°C (91°F)	51 mm (2.0 inches)	47%	extreme
August Weather	33°C (91°F)	42 mm (1.7 inches)	71%	extreme
September Weather	30°C (87°F)	47 mm (1.9 inches)	80%	extreme
October Weather	27°C (81°F)	17 mm (0.7 inches)	73%	very high
November Weather	22°C (72°F)	15 mm (0.6 inches)	75%	high
December Weather	17°C (62°F)	12 mm (0.5 inches)	81%	moderate