UV Index in San Gregorio, Mexico

Last updated: July 2, 2025

Awareness of the UV Index is crucial for residents and visitors in San Gregorio, Mexico, where the sun’s rays can be particularly intense. Understanding UV levels helps in preventing sunburn and protecting skin health, ensuring that outdoor activities remain safe and enjoyable. With a Cwb climate, San Gregorio experiences distinct seasons, but its midday UV exposure can reach alarming levels, peaking at 15 around 2 PM. Armed with this knowledge, you can take simple precautions, like wearing sunscreen and protective clothing, to enjoy the beautiful outdoors without risking your skin.

Hourly UV Index in San Gregorio

The UV Index fluctuates throughout the day, peaking in the early afternoon. At 07:00, it starts at a safe level of 0, gradually rising to 1 by 08:00. As the sun climbs higher, the index spikes dramatically, reaching 5 by 10:00 and soaring to a striking 12 at noon. The intensity peaks further at 13:00 with a maximum of 14, and then hits a scorching high of 15 at 14:00. As the day progresses, the UV levels begin to taper off; they drop to 13 at 15:00, then decline steadily, hitting 6 by 17:00 and tapering down to 1 by 19:00. These numbers remind us to take care during the midday hours when sun protection is essential!

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	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	15	extreme	10 min
15:00	13	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 Gregorio

During the year, UV exposure varies significantly, with the highest risk occurring from February to October, where the UV Index consistently reaches 12 or higher, classifying it as extreme. Particularly high-risk months include March, April, May, June, July, August, and September, all maintaining an index of 14 or higher, thus posing a burn time of merely 10 minutes. In contrast, January, November, and December exhibit lower, though still very high, UV levels, with burn times stretching to 15 minutes. Residents and visitors are strongly advised to take precautions such as wearing sunscreen, protective clothing, and seeking shade during peak hours, especially in the high-risk months to mitigate the significantly increased risk of skin damage.

Monthly Maximum UV Index for San Gregorio, Mexico

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

The table above highlights how UV exposure in San Gregorio 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 Gregorio'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 Gregorio	10	12	14	14	14	14	15	14	14	12	10	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