May Weather in San Fernando, Mexico

Last updated: August 27, 2025

The average temperature in San Fernando, Mexico during May is a pleasant 23°C (74°F). Expect the minimum temperature to dip to 9°C (49°F), while the maximum can reach 34°C (94°F). With a precipitation amount of just 9 mm (0.3 in) spread over 1 day, the atmosphere remains relatively dry, boasting an average humidity of 51%.

May Temperature in San Fernando

In May in San Fernando, the average temperature is 23°C (74°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop as low as 9°C (49°F). Be prepared for both warm days and cooler nights when planning your travels.

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

The chart illustrates May temperature patterns in San Fernando, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Fernando, May typically has an average temperature of 23°C (74°F), with highs reaching up to 34°C (94°F) and lows dropping to around 9°C (49°F).

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

May Precipitation in San Fernando

In San Fernando in May, the precipitation amount is 9 mm (0.3 in) over the course of 1 day.

May Precipitation Trends in San Fernando

The chart displays monthly precipitation patterns in San Fernando, 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 Fernando, May typically receives around 9 mm (0.3 inches) of precipitation spread over approximately 1 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 San Fernando

In San Fernando in May humidity is 51%. With an average temperature of 23°C (74°F), this humidity feels like a comfortable embrace, making traveling enjoyable, though you might feel a slight stickiness in the air that encourages frequent breaks to savor refreshing drinks.

May Average Humidity in San Fernando

This chart illustrates the average monthly humidity levels in San Fernando, 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 Fernando is approximately 51%, 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 San Fernando

In San Fernando 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 Fernando.

Maximum UV Index Levels in San Fernando for May

The chart shows the monthly maximum UV Index (UVI) for San Fernando 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 Fernando typically reaches 13, which falls under the extreme exposure category.

Data source: San Fernando 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 Fernando Compares to Other Months

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

This table compares monthly weather conditions in San Fernando, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	18°C (65°F)	28 mm (1.1 inches)	64%	very high
February Weather	19°C (66°F)	39 mm (1.5 inches)	57%	very high
March Weather	20°C (69°F)	2 mm (0.1 inches)	46%	extreme
April Weather	21°C (71°F)	1 mm (0.0 inches)	42%	extreme
May Weather	23°C (74°F)	9 mm (0.3 inches)	51%	extreme
June Weather	24°C (76°F)	146 mm (5.7 inches)	74%	extreme
July Weather	24°C (75°F)	289 mm (11.4 inches)	79%	extreme
August Weather	24°C (75°F)	313 mm (12.3 inches)	81%	extreme
September Weather	23°C (74°F)	344 mm (13.5 inches)	84%	extreme
October Weather	23°C (74°F)	153 mm (6.0 inches)	75%	extreme
November Weather	21°C (70°F)	24 mm (0.9 inches)	71%	very high
December Weather	19°C (66°F)	26 mm (1.0 inches)	74%	high