UV Index in Santiago, Mexico

Last updated: May 3, 2025

In Santiago, Mexico, understanding the UV Index is crucial for maintaining your skin health and preventing painful sunburns. With a BSh climate that features plenty of sunshine, the risk of overexposure to UV rays becomes significant, especially during peak hours when the index can soar to 13. By regularly checking the UV levels, you can take necessary precautions, safeguarding yourself against long-term skin damage while enjoying the beautiful outdoors. Being informed about the UV Index empowers residents and visitors alike to embrace the sun responsibly.

Hourly UV Index in Santiago

At 07:00 and 08:00, the UV Index remains low, peaking at 1, making it a safe time for outdoor activities. However, as the day progresses, the sun’s intensity ramps up sharply. By 10:00, the index reaches 5, climbing to a striking 11 by noon. The day hits its peak at 13:00 and 14:00, with a UV Index of 13, warranting caution and sun protection. As the afternoon unfolds, you’ll find a gradual decline: readings drop to 11 at 15:00, then 8 at 16:00, further easing to 2 by 18:00, and finally settling back to 1 by 19:00. Remember, to enjoy the sun safely, consider protective measures during the high 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	2	low	45 min
10:00	5	moderate	30 min
11:00	8	very high	15 min
12:00	11	extreme	10 min
13:00	13	extreme	10 min
14:00	13	extreme	10 min
15:00	11	extreme	10 min
16:00	8	very high	15 min
17:00	5	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Santiago

The UV Index displays significant seasonal variations, peaking during the late spring and summer months. From March to August, the UV Index reaches extreme levels (11-13), with the highest burn time dropping to just 10 minutes. The high-risk months for sun exposure are February through October, with March to August being particularly hazardous. Visitors and residents should take precautions during these months, such as seeking shade, wearing protective clothing, and applying sunscreen regularly. Conversely, the UV Index drops in January (7) and December (6), offering some respite, but even during these months, exposure is still considered high. Therefore, it's crucial for everyone to remain vigilant against UV radiation throughout the year.

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
Santiago	7	9	11	13	13	13	13	12	12	11	8	6
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
Puebla UVI	10	12	14	15	15	15	15	14	14	13	10	9