Last updated: May 3, 2025
In San Isidro Reynosa, Mexico, staying informed about the UV Index is crucial for protecting your skin and maintaining overall health. Understanding the varying UV levels throughout the day can help you prevent sunburn and reduce the risk of long-term skin damage. With a Cfb climate that delivers plenty of sunshine, residents and visitors alike face significant UV exposure, particularly during peak hours from 10 AM to 3 PM when the index soars to dangerous levels of 14 and 15. Being aware of the UV Index not only allows you to enjoy the outdoors safely but also promotes healthier skin practices tailored to the specific climate of San Isidro Reynosa. Stay informed and stay protected!
As the sun rises, the UV Index begins its steady climb, starting at a low of 1 at 7:00 AM and 8:00 AM. However, by 9:00 AM, it reaches 3, signaling the start of stronger rays. The peak occurs at 12:00 PM, soaring to a striking 14, and then hitting its maximum of 15 at 1:00 PM. For those out in the sun, this indicates a significant need for sun protection. The index gradually declines in the afternoon, dropping to 12 by 3:00 PM, and further to 5 by 5:00 PM, before returning to a low of 1 by 7:00 PM. This data emphasizes the importance of being sun-smart, particularly during those critical midday hours when the UV intensity 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 | 14 | extreme | 10 min |
| 13:00 | 15 | extreme | 10 min |
| 14:00 | 14 | extreme | 10 min |
| 15:00 | 12 | extreme | 10 min |
| 16:00 | 8 | 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, UV Index levels exhibit significant seasonal fluctuations, with high-risk months typically from February to October. During this period, the UV Index peaks at 15, categorized as extreme, particularly from April to July, necessitating vigilant sun safety measures. In these months, the burn time is only 10 minutes, indicating a critical need for protective measures such as sunscreen, hats, and UV-blocking sunglasses. Conversely, November and December see a decrease in UV exposure, categorized as very high, with a lengthened burn time of 15 minutes in those months. Therefore, both visitors and residents are strongly advised to monitor UV levels regularly and take necessary precautions, especially during the warmer, sunnier months to minimize the risk of 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 |
| 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 Reynosa | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |