Last updated: August 1, 2025
Understanding the UV Index is crucial for residents of San Nicolas Tlazala, Mexico, where the climate often presents higher exposure risks. As a Cwb climate zone, the region experiences intense sun, especially between late morning and early afternoon when UV levels peak at an alarming 14. Being aware of these UV levels is essential not just for preventing painful sunburns but also for protecting long-term skin health. The varying UV Index throughout the day signifies the need to take precautions, ensuring you enjoy the sun safely while safeguarding your skin from its harmful effects.
The UV Index for the day showcases a dramatic rise in intensity as the sun climbs higher in the sky. Starting from a calm 0 at 07:00, it gradually ticks upward, reaching 1 by 08:00. As the clock strikes 10:00, the UV Index surges to 5, and by 11:00, it climbs to a robust 9. The peak occurs at 13:00 and 14:00, where it hits a thrilling 14—a clear warning for sun protection. As the afternoon wanes, the intensity begins to drop, falling to 9 by 16:00, and further down to 5 at 17:00. The day wraps up with a gentle decline, ending with a low 1 by 19:00. As such, it’s essential to stay vigilant during the peak hours, particularly between 11:00 and 14:00, to enjoy the sun safely!
| 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 | 12 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 14 | extreme | 10 min |
| 15:00 | 12 | extreme | 10 min |
| 16:00 | 9 | very high | 15 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index demonstrates significant seasonal changes, peaking between March and September with values consistently classified as extreme (UV Index 15) and requiring minimal exposure for skin protection. The highest risk months are March, April, May, and September, where the UV Index reaches 15, indicating a burn time of just 10 minutes. Even in January and November, the UV Index remains high at 10, requiring careful sun exposure management. Visitors and residents are advised to take precautions during these high-risk months by wearing sunscreen, protective clothing, and seeking shade to minimize the risk of skin damage. Remember, even on cloudy days, UV radiation can still be intense, so staying vigilant is key.
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 |
| 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 |
| San Nicolas Tlazala | 10 | 12 | 15 | 15 | 15 | 14 | 14 | 14 | 15 | 12 | 10 | 9 |