UV Index in Monterrey, Mexico

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Monterrey, Mexico, where the sun's intensity can pose significant risks to skin health. With UV levels peaking at a staggering 14 around midday, awareness of these fluctuations can be vital for effective sunburn prevention and long-term skin protection. Given Monterrey’s desert climate, the potential for high UV exposure is constant, making it essential to monitor daily UV readings to enjoy the outdoors safely while keeping your skin in mind. Stay informed and safeguard your skin by understanding the UV Index!

Hourly UV Index in Monterrey

Throughout the day, the UV Index exhibits a dramatic rise, peaking during midday. Starting at a gentle 1 at 7:00 AM, it gradually climbs to 3 by 9:00 AM, before surging to an intense 13 by noon. The sun reaches its zenith at 1:00 PM, with a blistering 14, warning outdoor enthusiasts to take extra precautions. As the afternoon progresses, the index begins to decline, dropping to 7 by 4:00 PM, and then tapering further to 2 by 6:00 PM. By 7:00 PM, the day winds down with a safe 1 on the index. Those enjoying the outdoors are reminded to stay protected during the peak hours to avoid harmful UV exposure.

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	7	high	25 min
11:00	10	very high	15 min
12:00	13	extreme	10 min
13:00	14	extreme	10 min
14:00	13	extreme	10 min
15:00	11	extreme	10 min
16:00	7	high	25 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Monterrey

Seasonal changes in the UV Index reveal that the highest risk months for sun exposure are from February through October, where the index consistently reaches extreme levels (12-15) and burn times are as short as 10 minutes. Notably, July witnesses the peak UV Index of 15. Conversely, January, November, and December show a decline, with very high exposure levels, allowing for slightly longer burn times of 15 minutes. Given these conditions, it is essential for both visitors and residents to take proactive sun safety measures during peak months, including wearing sunblock, protective clothing, and seeking shade during the hottest parts of the day.

Monthly Maximum UV Index for Monterrey, Mexico

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

The table above highlights how UV exposure in Monterrey 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.

Monterrey'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
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
Monterrey	10	12	14	14	14	14	15	14	13	13	10	9
Puebla UVI	10	12	14	15	15	15	15	14	14	13	10	9