UV Index in Monterrey, Mexico

Last updated: June 2, 2025

Understanding the UV Index is vital for residents and visitors in Monterrey, Mexico, where the sun shines intensely throughout much of the year. With the city's Aw climate, the UV levels can spike dramatically, peaking at a hazardous 14 in the early afternoon. Being aware of these levels helps in preventing sunburn and safeguarding skin health, particularly during those hours when UV exposure is highest. Whether you’re exploring the city or enjoying outdoor activities, keeping an eye on the UV Index is essential to enjoy the sunshine safely and protect your skin from potential damage.

Hourly UV Index in Monterrey

As the sun rises, the UV Index starts off low at 1 by 7:00 AM and 8:00 AM, perfect for early morning outings without much concern for sunburn. However, as the day progresses, intensity ramps up significantly, peaking at a striking 14 by 1:00 PM. The 12:00 PM hour marks an intense 13, indicating a time when sun safety becomes crucial. With values tapering off after 3:00 PM, where it drops to 10, and then gradually decreases to 1 by 7:00 PM, it's clear the midday sun is the strongest. To enjoy outdoor activities safely, be sure to slather on sunscreen and wear protective clothing during those peak UV 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	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	10	very high	15 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