UV Index in El Castillo, Mexico

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors of El Castillo, Mexico, especially in a region with a Cwa climate that features warm summers and mild winters. As UV levels can peak with an impressive index of 14 around midday, being aware of the UV Index helps you take proactive steps against sunburn and long-term skin damage. With typical exposure risks soaring during the hottest hours, knowing how to protect your skin becomes essential for maintaining your health and enjoying the vibrant outdoor lifestyle that El Castillo has to offer.

Hourly UV Index in El Castillo

The UV Index today shows a dramatic rise in solar intensity as the day progresses. Starting from a mild 0 at 7:00 AM, it gently increases to 1 by 8:00 AM. But as the clock strikes 10:00 AM, the index skyrockets to 5, reaching a peak of 14 by 1:00 PM and holding steady until 2:00 PM. The afternoon brings a noticeable decline, dropping to 12 at 3:00 PM and gradually tapering off to 5 by 5:00 PM. By 6:00 PM, the UV levels fall to 3, finally settling at a safe 1 as the sun begins to set at 7:00 PM. Be cautious during peak hours when the UV Index soars—a perfect reminder to protect your skin!

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	8	very high	15 min
12:00	12	extreme	10 min
13:00	14	extreme	10 min
14:00	14	extreme	10 min
15:00	12	extreme	10 min
16:00	9	very high	15 min
17:00	5	moderate	30 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in El Castillo

Throughout the year, the UV Index exhibits significant seasonal variations, peaking during the spring and summer months. From February through August, the UV Index consistently reaches extreme levels (11-14), with the highest values recorded in March, April, May, and August. Notably, October also remains at an extreme level (12), indicating potential for harmful UV exposure. The high-risk months for UV exposure are thus identified as February through August, where the advised burn time is only 10 minutes. In contrast, January, November, and December present lower UV levels (with indices of 9 and 8), classified as very high, allowing for a slightly longer exposure time of 15 minutes. Visitors and residents are strongly advised to take protective measures, such as wearing sunscreen, protective clothing, and seeking shade during peak UV hours, particularly from late winter through summer.

Monthly Maximum UV Index for El Castillo, Mexico

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

The table above highlights how UV exposure in El Castillo 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.

El Castillo'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
El Castillo	9	11	14	14	14	14	13	14	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