UV Index in San Fernando, Mexico

Last updated: July 2, 2025

Understanding the UV Index is essential for residents and visitors of San Fernando, Mexico, as it serves as a crucial indicator of ultraviolet radiation exposure levels. This knowledge is key to preventing sunburn and protecting skin health, particularly during peak hours when UV levels soar. With a warm climate that often sees high UV exposure, particularly from midday to early afternoon, staying informed about the UV Index can help you make safer choices for outdoor activities, ensuring you enjoy the beautiful weather without compromising your well-being.

Hourly UV Index in San Fernando

As the sun rises, the UV Index begins its gentle ascent, peaking at 1 during the early hours at 07:00 and 08:00. By 09:00, it ramps up to a moderate 3, but as the clock strikes 10:00, the intensity surges to a more notable 5. The sun reaches its zenith around 12:00, where the index hits a staggering 12, hinting at the need for extra caution. The UV Index reaches its apex at 13:00 with a robust 14, before gradually tapering off to 8 by 16:00. As the day winds down, it descends to 4 at 17:00, eventually retreating to a safer 1 by 19:00. Ensure to protect your skin during those peak hours when the UV levels soar!

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	1	low	45 min
08:00	1	low	45 min
09:00	3	moderate	30 min
10:00	5	moderate	30 min
11:00	9	very high	15 min
12:00	12	extreme	10 min
13:00	14	extreme	10 min
14:00	13	extreme	10 min
15:00	11	extreme	10 min
16:00	8	very high	15 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in San Fernando

Throughout the year, UV exposure fluctuates significantly, with the highest risk months occurring from February to October when the UV Index peaks at 13-14 in the summer months. During this period, the burn time is incredibly short—only 10 minutes—indicating extreme exposure levels. Notably, March and April maintain a consistent UV Index of 12-13, reinforcing the need for heightened sun safety measures. January, November, and December present very high risk levels but offer slightly longer burn times of 15 minutes. To ensure safety, visitors and residents should seek shade, wear protective clothing, and regularly apply high-SPF sunscreen, especially during the peak months of February through October.

Monthly Maximum UV Index for San Fernando, Mexico

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in San Fernando. 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 Fernando, 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 Fernando UV Index with Other Mexico Cities

The table above highlights how UV exposure in San Fernando 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 Fernando'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
San Fernando	9	11	12	13	13	14	14	13	13	11	9	8
Guadalajara UVI	9	11	14	14	14	13	13	13	13	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