UV Index in Viesca, Mexico

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Viesca, Mexico, where the combination of a hot desert climate (BWh) and high sun exposure can lead to significant risks for skin health. Being aware of UV levels is essential not only for preventing painful sunburns but also for reducing the long-term risks of skin damage and diseases. With peak UV readings soaring to 14 around midday, it's important to take proactive steps to protect yourself during those peak sun hours, ensuring fun in the sun without compromising your skin’s health. Stay informed, stay safe, and enjoy the sunshine responsibly!

Hourly UV Index in Viesca

During the day, the UV Index experiences a dramatic rise, starting at 0 at 7:00 AM and reaching its peak of 14 by 2:00 PM. The ascent is gradual, with values climbing from 1 at 8:00 AM and hitting 4 by 10:00 AM. As the sun reaches its zenith, the intensity of UV rays intensifies, soaring to 11 at 12:00 PM and peaking at 13 by 1:00 PM. However, after 2:00 PM, a notable decline begins, with the index dropping steadily to 6 at 5:00 PM, and further dwindling to 1 by 7:00 PM. It's a classic example of nature’s cycle, showcasing the importance of sun protection during 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	0	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	4	moderate	30 min
11:00	8	very high	15 min
12:00	11	extreme	10 min
13:00	13	extreme	10 min
14:00	14	extreme	10 min
15:00	12	extreme	10 min
16:00	10	very high	15 min
17:00	6	high	25 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in Viesca

As the seasons change, so do UV levels, significantly impacting sun exposure risks throughout the year. The highest UV Index values occur from March to October, particularly peaking in April, May, July, and August with an extreme rating of 14 and a short burn time of just 10 minutes. February also presents a very high risk with a UV Index of 10. This makes March through October the critical months for sun safety, especially for those spending time outdoors. Residents and visitors should take precautionary measures during these months, such as wearing protective clothing, using sunscreen with a high SPF, and seeking shade during peak hours to reduce the risk of skin damage. In contrast, January, November, and December see lower UV levels, with indices of 7 to 8, allowing for relatively safer outdoor activities with longer burn times of 15 to 25 minutes.

Monthly Maximum UV Index for Viesca, Mexico

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

The table above highlights how UV exposure in Viesca 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.

Viesca'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
Viesca	7	10	12	14	14	13	14	13	13	11	8	7
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