UV Index in Santiago, Mexico

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors of Santiago, Mexico, where the climate is characterized as Aw—hot and dry—with intense sunlight year-round. Being aware of UV levels helps you protect your skin from harmful effects such as sunburn and long-term damage. With peak UV Index readings reaching as high as 15 around midday, it's vital to take preventive measures during daily activities. By staying informed about the UV Index, you can enjoy the vibrant outdoor lifestyle that Santiago has to offer while safeguarding your skin’s health.

Hourly UV Index in Santiago

The UV Index today starts off relatively low, peaking at 1 between 7:00 and 8:00 AM, making it a safe time for morning strolls. As the sun rises higher in the sky, from 9:00 AM onward, the intensity ramps up, reaching a notable 6 by 10:00 AM. By noon, the index skyrockets to 13, indicating a high risk of harm from unprotected sun exposure. The sun's intensity reaches its zenith at 1:00 PM with a UV Index of 15, before gradually tapering off to 11 by 3:00 PM. As the afternoon wanes, the index declines steadily, dropping to 4 by 5:00 PM, and returns to a comfortable 1 by 7:00 PM. It’s wise to seek shade and wear protective clothing during the midday peak to safeguard your skin from harmful UV rays!

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	6	high	25 min
11:00	10	very high	15 min
12:00	13	extreme	10 min
13:00	15	extreme	10 min
14:00	14	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 Santiago

Seasonal changes in the UV Index highlight significant risks for both visitors and residents, particularly from February to October, when the UV Index reaches extreme levels. The highest risk occurs in July, with an index of 15, demanding protective measures within just 10 minutes of sun exposure. Conversely, January, November, and December show lower UV levels, classified as very high, with burn times of 15 minutes. To minimize the risk of skin damage, it is crucial during high-risk months to seek shade, wear protective clothing, and apply sunscreen frequently, especially during midday hours when the sun is at its peak intensity. Stay vigilant, and prioritize health alongside outdoor activities!

Monthly Maximum UV Index for Santiago, Mexico

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

The table above highlights how UV exposure in Santiago 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.

Santiago'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
Santiago	10	12	14	14	14	14	15	13	13	12	10	9
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