Last updated: July 2, 2025
In San Sebastian de las Grutas, Mexico, being aware of the UV Index is essential for maintaining your skin health and preventing sunburns. With a Cwb climate that brings warm days, understanding the varying levels of UV exposure throughout the day can make a significant difference in your outdoor experiences. From a moderate UV Index of 3 in the morning to a peak of 15 during the afternoon, the risks of overexposure increase dramatically. By staying informed about UV levels, you can better protect yourself and enjoy the beautiful sun-soaked landscapes that San Sebastian de las Grutas has to offer.
The UV Index for the day presents a striking pattern of intensity as the sun rises and reaches its zenith. Beginning at 1 at 07:00 and 08:00, the index gradually climbs to 3 by 09:00. As the morning progresses, it spikes dramatically, peaking at an impressive 15 from 13:00 to 14:00. This period of high UV exposure, highlighted by a maximum of 13 at 12:00, underscores the potential risks for outdoor activities without proper protection. Following this peak, the index gracefully declines, dipping to 9 at 16:00 and tapering off to 1 again by 19:00. It’s a reminder to embrace the sun wisely, prioritizing skin safety during those mid-afternoon hours!
| 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 | 13 | extreme | 10 min |
| 13:00 | 15 | extreme | 10 min |
| 14:00 | 15 | 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 exhibits significant seasonal variation, peaking from March to October when it reaches the extreme category of 15 during most months. The highest risk months are from February to July, where the UV Index consistently remains above 13, with a particularly concerning reading of 15 in March through July. Visitors and residents should exercise caution during these months, limiting sun exposure to 10 minutes or less and utilizing protective measures such as broad-spectrum sunscreen, hats, and sunglasses. As autumn approaches, UV levels gradually decrease, with December and January offering some relief, but even then, a UV Index of 10 indicates that caution is still advised. Stay informed and prioritize sun safety to minimize health risks throughout the year.
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 Sebastian de las Grutas | 10 | 13 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 11 | 9 |