Last updated: June 2, 2025
Being aware of the UV Index is crucial for residents and visitors of Urengueitiro (San Martin), Mexico, where the climate is classified as Cwb, characterized by mild temperatures and distinct wet and dry seasons. Understanding the UV levels is essential for effective sunburn prevention and maintaining overall skin health, especially as midday readings can reach a high of 14 around noon. Knowing when UV exposure peaks helps individuals protect themselves from potential skin damage linked to prolonged sun exposure in this sun-soaked region. With Urengueitiro's unique climate, being equipped with UV knowledge is a vital step toward enjoying the outdoors safely.
The UV Index for the day reveals a dramatic rise in sun exposure as the hours progress. Starting from a maximum of 0 at 07:00, the index climbs to a mild 1 at 08:00 and continues to escalate, hitting 2 by 09:00. The intensity peaks sharply at 12:00 with a striking 12. From there, the sun's rays reach their zenith at 13:00 and 14:00 with a peak UV Index of 14, prompting caution for outdoor activities. As the afternoon wanes, the index gradually declines, resting at 9 at 16:00, then settling down to 3 by 18:00, and finally returning to a safer 1 at 19:00. Be sure to gear up with sunscreen during those peak hours to stay protected!
| 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 | 13 | extreme | 10 min |
| 16:00 | 9 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
The UV Index exhibits significant seasonal fluctuations, reaching its peak during the spring and summer months from February to September, where it consistently registers between 11 to 14, classifying as extreme and necessitating a burn time of just 10 minutes. January and November see a decline to a UV Index of 9, indicating a very high exposure risk with a burn time of 15 minutes, while December and October slightly lower to UV Index 8 and 11 respectively. Residents and visitors are strongly advised to take precautions during the high-risk months of February through September, including wearing sunscreen, protective clothing, and limiting sun exposure, especially during peak hours, to prevent skin damage.
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 |
| Urengueitiro (San Martin) | 9 | 11 | 14 | 14 | 14 | 14 | 13 | 13 | 14 | 11 | 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 |