UV Index in Hermosillo, Mexico

Last updated: June 2, 2025

In Hermosillo, Mexico, being aware of the UV Index is crucial for protecting your skin from the sun’s harmful effects. Understanding UV levels helps prevent painful sunburns and long-term skin health issues, especially in this arid climate where the sun’s rays can be intensely strong. With peak UV readings soaring to 14 around midday, residents and visitors alike must take proactive measures to shield themselves from excessive exposure. By staying informed about UV levels throughout the day, you can enjoy the sunny weather while keeping your skin safe and healthy.

Hourly UV Index in Hermosillo

The UV Index throughout the day reveals a striking pattern of intensity, peaking at 14 around 1 PM, indicating a high risk of harm from unprotected sun exposure. Early morning hours remain safe, with values at 1 until 9 AM, but as the sun climbs, so does the UV intensity—reaching 10 by 11 AM. The height of danger occurs during the afternoon when the index soars to its maximum, 13 at 12 PM and 14 at 1 PM, before gradually declining to 4 by 5 PM. As evening approaches, the UV Index drops significantly, returning to 1 by 6 PM. It's crucial to stay protected, especially during the midday hours when the sun's rays are the strongest!

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	7	high	25 min
11:00	10	very high	15 min
12:00	13	extreme	10 min
13:00	14	extreme	10 min
14:00	13	extreme	10 min
15:00	10	very high	15 min
16:00	7	high	25 min
17:00	4	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Hermosillo

Throughout the year, significant seasonal changes in the UV Index are observed, with high-risk months spanning from February to September when the index reaches extreme levels, peaking at 14. During these months, the recommended burn time is notably short, at just 10 minutes, emphasizing the need for protective measures. Even in the winter months, the UV Index remains a concern, particularly in January and February with values of 10 and 12, respectively, where exposure is categorized as very high and extreme. For residents and visitors, it is crucial to stay vigilant and adopt protective strategies, such as wearing sunscreen, hats, and sunglasses, especially during the high UV season, to mitigate the risk of sunburn and long-term skin damage.

Monthly Maximum UV Index for Hermosillo, Mexico

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

The table above highlights how UV exposure in Hermosillo 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.

Hermosillo'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
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
Hermosillo	10	12	14	14	14	14	14	13	14	13	10	9
Puebla UVI	10	12	14	15	15	15	15	14	14	13	10	9