Last updated: July 2, 2025
Awareness of the UV Index is crucial for residents and visitors in San Isidro Monjas, Mexico, where the sun's intensity can significantly impact skin health. Understanding UV levels is essential for preventing sunburn and reducing long-term skin damage, especially during peak hours when the index soars to levels as high as 15. With a Cwb climate, San Isidro Monjas experiences persistent UV exposure risks, particularly from 10 AM to 3 PM—the time when the UV Index reaches its maximum. By staying informed about daily UV readings, you can take proactive steps to protect yourself and enjoy the sunny allure of this vibrant region safely.
The UV Index data paints a vibrant picture of sunlight intensity throughout the day. Beginning with a mild UVI of 1 at 7:00 AM, the day starts gently, gradually climbing to 3 by 9:00 AM. However, as the sun reaches its zenith, the UVI skyrockets, peaking at an intense 15 between 1:00 PM and 2:00 PM. During these hours, it's crucial to take protective measures against harmful UV rays. As the sun begins to set, the index dips, dropping to 5 by 5:00 PM and returning to a safer 1 by 7:00 PM. This fluctuation highlights the importance of staying sun-smart during peak hours, especially between 11:00 AM and 2:00 PM when the UVI 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 | 6 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 15 | extreme | 10 min |
| 14:00 | 15 | extreme | 10 min |
| 15:00 | 13 | 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 Isidro Monjas | 10 | 13 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 11 | 9 |