UV Index in Castanos, Mexico

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors in Castanos, Mexico, where the sun shines brightly in a BSh climate. With high UV levels peaking around midday, it's essential to stay informed about the potential risks associated with sun exposure, including sunburn and long-term skin health issues. During the hottest hours, especially between 12:00 PM and 2:00 PM when the UV Index soars to 12, taking preventative measures becomes imperative for your safety and well-being. Stay proactive and safeguard your skin while enjoying the beautiful sunny days in Castanos!

Hourly UV Index in Castanos

Throughout the day, the UV Index sees a remarkable rise, starting at a mild 1 at 07:00, and gradually increasing to a moderate 2 by 09:00. As the sun climbs higher, the index peaks at a striking 12 between 13:00 and 14:00, indicating a high level of UV radiation. From 11:00 onwards, the index consistently remains elevated, reaching a maximum of 10 at 12:00 before gradually descending. By 17:00, it falls back to 5, and finally retreats to 1 by 19:00. This data underscores the importance of sun safety during midday hours, when UV rays are most intense.

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	10	very high	15 min
13:00	12	extreme	10 min
14:00	12	extreme	10 min
15:00	11	extreme	10 min
16:00	8	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 Castanos

Throughout the year, the UV Index shows significant seasonal fluctuations, with the most intense levels occurring between March and September. During this period, the UV index reaches an extreme level of 12, indicating a very high risk of harm from unprotected sun exposure, with a burn time of just 10 minutes. February also presents a noteworthy risk with a UV index of 9 (very high), while January and December see lower levels, classified as high, with a more moderate burn time of 25 minutes. It is vital for visitors and residents to take precautions during the high-risk months (February to September) by wearing sunscreen, protective clothing, and seeking shade, especially during midday when the sun’s strength peaks.

Monthly Maximum UV Index for Castanos, Mexico

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

The table above highlights how UV exposure in Castanos 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.

Castanos'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
Castanos	6	9	11	12	12	12	12	12	12	10	7	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