UV Index in Santo Tomas, Mexico

Last updated: June 2, 2025

In Santo Tomas, Mexico, being aware of the UV Index is crucial for safeguarding your skin health under the intense sun. Understanding UV levels can help you avoid painful sunburns and lower your long-term risk of skin cancer. Known for its warm Aw climate, Santo Tomas experiences peak UV exposure, especially between noon and 2 PM, where values soar to an intense 14. By staying informed about the UV Index, you can enjoy the beautiful outdoors while protecting your skin from harmful rays.

Hourly UV Index in Santo Tomas

At dawn, the UV Index begins its day at a gentle 1, providing a safe start for early risers. As the sun climbs higher, 09:00 marks the emergence of a more moderate 4, gradually prepping the skin for what's to come. By 10:00, the intensity peaks significantly to 7, prompting a reminder for sun protection. The true zenith occurs around 12:00 when the index reaches a blazing 13, peaking further at 13:00 with an intense 14. As the afternoon unravels, the index starts to wane—by 15:00 it’s down to 10, and later drops to 7 by 16:00. As the day transitions into evening, the UV levels ease back down to 1 by 18:00, granting a soothing conclusion to a sun-soaked day. Always remember to protect your skin 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	4	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	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Santo Tomas

The UV Index demonstrates significant seasonal variability, with peak levels occurring from February to October, where an extreme rating (UV Index 12-14) is prevalent for most months. January and November feature a very high exposure category, while December sees a slight decrease. March through October are particularly concerning, as these months also have the shortest burn time of only 10 minutes. Visitors and residents should exercise caution during these high-risk months by wearing sunscreen, protective clothing, and seeking shade, especially during peak sunlight hours to minimize the risk of UV-related skin damage. Remember, even on cloudy days, UV rays can still cause harm, so stay vigilant year-round.

Monthly Maximum UV Index for Santo Tomas, Mexico

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

The table above highlights how UV exposure in Santo Tomas 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.

Santo Tomas'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
Santo Tomas	10	12	14	14	14	14	14	14	14	13	10	9
Puebla UVI	10	12	14	15	15	15	15	14	14	13	10	9