UV Index in San Jose Piedras Negras, Mexico

Last updated: July 2, 2025

In San Jose Piedras Negras, Mexico, being aware of the UV Index is essential for maintaining your skin health and preventing sunburn. Understanding UV levels is crucial in this region, where daily exposure can significantly increase, particularly around midday when the index peaks at a striking 11 and 13 between 12 PM and 2 PM. With a tropical climate, residents and visitors are prone to heightened UV exposure, making it vital to monitor these levels to protect yourself from harmful rays. Stay informed and safeguard your skin while enjoying the glorious sunshine this beautiful area offers!

Hourly UV Index in San Jose Piedras Negras

During the day, the UV Index saw a notable increase, peaking at 13 between 1:00 PM and 2:00 PM, indicating a very high risk of harm from unprotected sun exposure. The morning hours started off low, with values of 1 at 7:00 AM and 8:00 AM, gradually rising to 5 by 10:00 AM. As the sun reached its zenith, the UVI soared to 11 at 12:00 PM and 8 by 4:00 PM. As the afternoon faded, the index declined, dropping to 4 at 5:00 PM and below 3 after 6:00 PM, returning to 1 by 7:00 PM. To enjoy the sun safely, it’s crucial to stay protected, especially during those peak hours!

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	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	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 Jose Piedras Negras

The UV Index experiences significant seasonal changes, peaking in the spring and summer months. From January to February, the UV Index rises from 10 to 11 and remains in the extreme category through to October, reaching a maximum of 14 in April, May, and June. Notably, March through October are particularly high-risk months for UV exposure, where the burn time is as short as 10 minutes. Conversely, as the year progresses into November and December, the UV Index decreases to 10 and 9, indicating a return to the very high category, with burn times extending to 15 minutes. Visitors and residents should take preventative measures by wearing sunscreen, protective clothing, and limiting sun exposure during peak hours, especially during the high-risk months of March through October.

Monthly Maximum UV Index for San Jose Piedras Negras, Mexico

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

The table above highlights how UV exposure in San Jose Piedras Negras 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 Jose Piedras Negras'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 Jose Piedras Negras	10	11	13	14	14	14	13	13	13	12	10	9
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