UV Index in San Juan del Rio, Mexico

Last updated: May 3, 2025

In San Juan del Río, Mexico, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn. Understanding UV levels helps residents and visitors alike navigate the risks associated with intense sun exposure, especially during the peak hours of 11 AM to 2 PM when the index can soar to a staggering 14. With its warm Aw climate, San Juan del Río sees high UV radiation throughout the year, making it essential to take protective measures against the sun’s harmful rays. Stay informed and safeguard your skin to enjoy all that this vibrant city has to offer!

Hourly UV Index in San Juan del Rio

The UV Index for the day reveals a clear pattern of increasing intensity as the sun climbs higher in the sky. Starting from a safe 0 at 07:00, the index gently rises to 1 at 08:00 and then to 2 by 09:00. However, as midday approaches, the readings spike dramatically, peaking at an intense 14 at 14:00. This midday heat marks the highest risk for sun exposure, with a staggering 11 seen at 12:00 and 13 at 13:00. The afternoon brings a gradual decline, with the UV Index dropping to 9 at 16:00 and continuing to decrease to 2 by 18:00. As the day transitions into evening, the risk subsides, settling at 1 by 19:00. This data underscores the importance of sun safety during peak hours, particularly between 11:00 and 15:00.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
Time	UVI	Category	Time to Burn
07:00	0	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	5	moderate	30 min
11:00	8	very high	15 min
12:00	11	extreme	10 min
13:00	13	extreme	10 min
14:00	14	extreme	10 min
15:00	12	extreme	10 min
16:00	9	very high	15 min
17:00	5	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in San Juan del Rio

Throughout the year, ultraviolet (UV) exposure varies significantly, with high-risk months identified primarily from February to October. During this period, the UV Index consistently falls within the extreme category, peaking at 14 in May, June, and September, indicating a burn time of just 10 minutes. In contrast, January, November, and December see very high UV levels, with longer burn times of 15 minutes. It is crucial for both visitors and residents to practice sun safety during these months by wearing appropriate sunscreen, hats, and protective clothing, and seeking shade during peak sunlight hours. Being aware of these seasonal changes can significantly reduce the risk of skin damage and related health issues.

Monthly Maximum UV Index for San Juan del Rio, Mexico

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in San Juan del Rio. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for San Juan del Rio, based on 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.

Compare San Juan del Rio UV Index with Other Mexico Cities

The table above highlights how UV exposure in San Juan del Rio compares to other major locations across Mexico. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

San Juan del Rio's solar exposure compared to other cities in Mexico. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Guadalajara UVI	9	11	14	14	14	13	13	13	13	12	9	8
San Juan del Rio	10	11	13	13	14	14	13	13	14	12	9	8
Iztapalapa UVI	10	12	14	15	14	14	14	14	14	12	10	8
Ecatepec de Morelos UVI	10	12	14	15	15	14	14	13	14	12	10	8
Mexico City UVI	10	12	14	15	15	14	14	13	14	12	10	8
Puebla UVI	10	12	14	15	15	15	15	14	14	13	10	9