UV Index in Hermosillo, Mexico

Last updated: May 3, 2025

Understanding the UV Index in Hermosillo, Mexico, is vital for protecting your skin and overall health. With the region's BWh climate, known for its hot, dry summers, UV exposure can spike drastically, reaching levels as high as 12 during midday hours. This awareness is crucial not just for preventing painful sunburns, but also for safeguarding against long-term skin damage. As you navigate daily activities in Hermosillo, being informed about UV levels can empower you to take necessary precautions, ensuring that your time outdoors remains enjoyable and safe.

Hourly UV Index in Hermosillo

The UV Index begins its ascent at 07:00 with a low reading of 1, signaling a mild start to the day. By 08:00, it rises to 3, still manageable for those enjoying the morning sun. However, as the sun climbs higher, the intensity peaks dramatically at 12:00 with a scorching 12, indicating a high risk of harm from unprotected sun exposure. Throughout the late morning and early afternoon, the index hovers around the 11-9 range, urging caution for outdoor activities. Post-14:00, the intensity wanes, dropping to 7 at 15:00 and further to 4 by 16:00, before settling back to 2 at 17:00. The day concludes with gentle UV levels of 1 from 18:00 onward, offering a safe reprieve as twilight approaches. Staying protected during peak hours is crucial to enjoy the beautiful sunshine without risk!

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	3	moderate	30 min
09:00	6	high	25 min
10:00	9	very high	15 min
11:00	11	extreme	10 min
12:00	12	extreme	10 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 min
16:00	4	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Hermosillo

Throughout the year, UV exposure varies significantly, with higher levels typically occurring between February and September. During this period, the UV Index peaks at 12, indicating an extreme exposure category from April to August, with a burn time of just 10 minutes. February and March also pose a risk, with indices of 8 and 10, respectively. The high-risk months for sunburn are therefore April through September, requiring caution. Visitors and residents should take protective measures, such as wearing sunscreen, protective clothing, and seeking shade, especially during peak sun hours. In contrast, January, November, and December see moderate to high UV levels, allowing for longer burn times, but still warranting regular sun protection. Staying informed and proactive can help everyone enjoy the outdoors safely.

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
Hermosillo	5	8	10	12	12	12	12	12	11	9	6	5
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