Last updated: August 1, 2025
Understanding the UV Index is vital for residents and visitors of San Lorenzo, Mexico, where the sun shines prominently throughout the year. With peak UV levels that can soar as high as 13, being aware of these readings is essential for preventing sunburn and protecting skin health. This charming locale, characterized by its Cfa climate, presents unique exposure risks, especially during midday hours when UV rays are most intense. By staying informed about the UV Index, you can enjoy the beautiful sunny days while safeguarding your skin against potential harm.
The UV Index data reveals a distinct pattern throughout the day, marking the sun's intensity. Starting off at a low 1 at 07:00, conditions remain safe until 09:00 when it rises to 2. A noticeable increase occurs at 10:00, surging to 5 as the sun climbs higher. The peak UV exposure hits an impressive 13 at both 13:00 and 14:00, suggesting it’s crucial for outdoor enthusiasts to take protective measures during these hours. As the day winds down, the index dips to 8 by 16:00, and then gradually declines to 2 by 18:00, settling back at 1 by the time the sun sets. It’s a clear reminder that midday hours require heightened caution against UV radiation!
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 | 11 | extreme | 10 min |
13:00 | 13 | extreme | 10 min |
14:00 | 13 | extreme | 10 min |
15:00 | 11 | extreme | 10 min |
16:00 | 8 | very high | 15 min |
17:00 | 5 | moderate | 30 min |
18:00 | 2 | low | 45 min |
19:00 | 1 | low | 45 min |
The UV Index varies significantly throughout the year, with the most intense levels occurring from February to October. The months of February, March, April, May, June, July, August, September, and October are classified in the extreme exposure category, with a UV Index peak of 13 during these months, resulting in a quick burn time of just 10 minutes. Conversely, January and November present a very high risk with a UV Index of 8 and 9 respectively, where burn times stretch to 15 minutes. By December, the UV risks reduce to high, with a burn time of 25 minutes. Residents and visitors should take special precautions during the high-risk months, including using broad-spectrum sunscreen, wearing protective clothing, and limiting sun exposure, especially from noon to 4 PM when the sun’s rays are strongest. Staying informed and prepared is essential to enjoy the outdoors safely.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
San Lorenzo | 8 | 11 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 11 | 9 | 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 |