UV Index in San Julio, Mexico

Last updated: August 1, 2025

In San Julio, Mexico, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn. With a climate characterized by high temperatures and intense sunlight, residents and visitors alike must understand the daily fluctuations of UV levels to protect themselves effectively. For instance, during peak hours, UV Index readings can soar as high as 13, indicating an extreme risk for skin damage. By staying informed and taking appropriate precautions, you can enjoy the beautiful sunshine of San Julio while safeguarding your skin from harmful UV radiation.

Hourly UV Index in San Julio

As the sun rises, the UV Index begins its ascent, starting at a cool 0 by 07:00 AM. By 08:00 AM, it nudges up to 1, a gentle reminder of the UV rays to come. The intensity escalates quickly, hitting 2 by 09:00 AM and reaching 4 at 10:00 AM. Peak intensity is felt at 12:00 PM when it soars to an impressive 10, and it climaxes at 13:00 PM with a formidable 13—elicit caution for sun exposure. As the afternoon unfolds, the index slowly declines, tapering to 12 at 15:00 PM, then 10 by 16:00 PM. The late hours offer some respite, as it decreases to 6 at 17:00 PM, before settling back to a manageable 3 by 18:00 PM and dropping to 1 as the day draws to a close at 19:00 PM. Be sure to take advantage of the earlier hours to enjoy sunshine safely! 🌞

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	4	moderate	30 min
11:00	7	high	25 min
12:00	10	very high	15 min
13:00	12	extreme	10 min
14:00	13	extreme	10 min
15:00	12	extreme	10 min
16:00	9	very high	15 min
17:00	6	high	25 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in San Julio

The UV Index shows a significant increase in UV radiation as the year progresses, with high-risk months primarily occurring from February to October, where the index reaches extreme levels of 12 to 14. March through October consistently presents dangers of severe sunburn within just 10 minutes of exposure. In contrast, January, November, and December maintain a high or very high risk but allow for longer burn times of 15 to 25 minutes. To ensure safety, both visitors and residents are strongly advised to wear adequate sun protection, including sunscreen, hats, and UV-protective clothing, particularly during these peak months to minimize the risk of skin damage.

Monthly Maximum UV Index for San Julio, Mexico

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

The table above highlights how UV exposure in San Julio 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 Julio'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 Julio	7	10	12	14	14	13	13	13	13	11	8	6
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