Last updated: July 2, 2025
In San Blas Atempa, Mexico, awareness of the UV Index is crucial for residents and visitors alike. Understanding the daily fluctuations in UV levels can significantly aid in sunburn prevention and maintain overall skin health, especially given the region's warm, tropical climate. With UV Index values peaking at a staggering 14 around midday, it's essential to take protective measures to minimize the risks associated with prolonged sun exposure. By staying informed, you can enjoy the vibrant outdoor life of San Blas Atempa while safeguarding your skin from harmful UV rays.
The UV Index of the day presents a clear story of rising intensity as the sun ascends. In the early hours, from 07:00 to 09:00, the index is low, peaking at 1, ideal for morning strolls. However, the sun grows stronger as noon approaches, with the index soaring to a striking 12 by 12:00, signaling high risk for unprotected skin. The peak intensity occurs between 13:00 and 14:00, where it reaches a maximum of 14—a critical time for sun safety. As the afternoon wanes, the UV Index gradually diminishes, dropping to 8 at 16:00, and further declining to 1 by 19:00. It’s a day underscoring the importance of sun protection, especially during the midday hours when UV exposure is at its highest!
| 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 | 5 | moderate | 30 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 14 | extreme | 10 min |
| 15:00 | 11 | extreme | 10 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As seasonal UV levels fluctuate throughout the year, visitors and residents must pay close attention to the high-risk months from February to October, when the UV Index consistently reaches extreme levels of 12 or higher. In these months, the burn time is dramatically reduced to just 10 minutes, making it crucial to take precautions. January, November, and December exhibit very high UV levels, allowing for slightly longer exposure times of 15 minutes, but caution is still advised. To protect yourself from potential skin damage, it's essential to apply broad-spectrum sunscreen, wear protective clothing, and seek shade during peak sunlight hours, especially in the spring and summer months when the UV Index peaks at 14 in May and July. Stay informed and safe to enjoy the outdoors responsibly.
UV Risk Categories
| 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 |
| San Blas Atempa | 10 | 12 | 13 | 13 | 14 | 13 | 14 | 13 | 13 | 12 | 10 | 9 |
| 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 |