Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Isla Mujeres, Mexico, where the sun shines brightly in its tropical climate. With UV levels often peaking significantly, awareness of these daily variations is essential for preventing sunburn and safeguarding skin health. During peak hours, especially from 11 AM to 1 PM, the UV Index can reach alarming numbers, indicating a high risk of harm from unprotected sun exposure. As you explore the stunning beaches and vibrant culture of Isla Mujeres, being informed about UV exposure risks will help you enjoy this paradise safely and responsibly.
Today’s UV Index showcases a dynamic rise and fall in sun intensity throughout the day. Early morning begins with a gentle 1 at 7:00 AM, gradually increasing to a mild 2 by 8:00 AM. As the sun climbs higher, we hit a noticeable 4 at 9:00 AM, but the real surge comes around 10:00 AM, peaking at a powerful 11 by 11:00 AM. The peak intensity reaches an astonishing 13 at both 12:00 PM and 1:00 PM, ideal times for those seeking a sun-soaked experience—though caution is advised! The afternoon brings a gradual decrease, with the index slipping to 8 at 3:00 PM and continuing down to 5 by 4:00 PM. As the day winds down, the UV levels fall back to 1 by the evening, highlighting the importance of timing when enjoying the great outdoors. 🌞
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index demonstrates significant seasonal changes, with high-risk months identified from March to October, where the index reaches extreme levels. In these months, the UV Index peaks at 13 in April, May, and June, corresponding to a burn time of only 10 minutes. Even in January and February, the UV Index remains notably high at 8 and 10, making these months also pose risks. As fall approaches, the index begins to decline, dropping to 11 in October and further down to 8 and 7 during November and December, with longer burn times of 15 and 25 minutes respectively. For both visitors and residents, it is crucial to take precautions during the high-risk months, including applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade, especially during midday hours to reduce the risk of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Isla Mujeres | 8 | 10 | 12 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 8 | 7 |
| 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 |