Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Zoyatlan, Mexico, where the sun’s rays can be particularly intense. With a tropical climate characterized by high temperatures and sunny days, awareness of UV levels is essential to prevent sunburn and protect long-term skin health. During peak times, especially around noon, the UV Index can soar to a maximum of 14, indicating an extreme risk of harm from unprotected sun exposure. By keeping an eye on the UV Index, you can take necessary precautions to enjoy the beauty of Zoyatlan while safeguarding your skin from harmful effects.
As the sun rises, UV Index levels begin low, at 1 at both 7:00 AM and 8:00 AM, making it a safe time for morning activities. By 9:00 AM, the index climbs to 2, still manageable for most outdoor enthusiasts. However, from 10:00 AM onward, the intensity escalates dramatically, peaking at an intense 14 from 1:00 PM to 2:00 PM. This is the moment to take caution, as the sun's rays are at their strongest—hitting a staggering 12 at 12:00 PM and gradually tapering off in the afternoon to 5 by 5:00 PM. As the day winds down, the UV Index dwindles back to 1 by 7:00 PM, offering a gentler wrap-up to a sun-drenched day. Stay protected during peak hours and enjoy the sunshine safely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 9 | 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 | 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 display notable seasonal changes, peaking during the spring and summer months. From January to April, UV levels gradually rise from 10 to 14, indicating a transition to extreme risk. The high-risk months are February through October, when the UV Index remains consistently 11 or higher, making it critical for visitors and residents to take precautions against sun exposure. In particular, March through June exhibits the highest levels at 14, with a burn time of just 10 minutes. As summer gives way to fall, UV levels begin to decline, but September and October still warrant caution due to an Index of 12. It is advised to wear protective clothing, apply broad-spectrum sunscreen, and seek shade during peak hours, especially from midday to early afternoon, to ensure safety and maintain skin health.
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 |
| Zoyatlan | 10 | 11 | 13 | 14 | 14 | 14 | 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 |