Last updated: July 2, 2025
Understanding the UV Index in San Juan Chancalaito, Mexico is crucial for protecting your skin and overall health. As a popular destination characterized by a warm climate, residents and visitors alike face heightened risks of sunburn and long-term skin damage, particularly during peak hours when UV levels can soar to a maximum of 14. Awareness of these levels not only aids in preventing sunburn but also fosters healthier skin practices essential for enjoying outdoor activities in this sun-kissed region. With daily UV exposure fluctuating between moderate and extreme, staying informed is your best defense against harmful rays while soaking up the beauty of this vibrant locale.
As the day unfolds, the UV Index rises dramatically, peaking in the early afternoon. Starting at a modest 1 at 07:00, it gradually climbs until it reaches a striking 14 by 13:00, marking the height of sun exposure danger. From there, it tapers off, dropping to 10 at 15:00, and continuing to decline to a safer 1 by evening. The notable surge around 12:00 with a maximum of 12 serves as a reminder to stay protected, donning sunscreen and seeking shade during peak hours. Embrace the sunlight wisely!
| 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 | 12 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 13 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index experiences significant fluctuations throughout the year, peaking in the late spring and summer months. January starts with a UV Index of 9, categorized as very high, but the intensity quickly escalates, reaching a maximum of 14 during April, June, and July, all classified as extreme. February through October are particularly high-risk months, with UV indices remaining between 12 to 14, necessitating careful sun exposure management. Residents and visitors are advised to take precautions during these high-risk periods, such as wearing sunscreen, protective clothing, and sunglasses, and limiting sun exposure to avoid skin damage. As the year progresses into November and December, the UV Index decreases to 10 and 9, respectively, indicating relatively safer conditions, but vigilance remains essential to maintain skin health year-round.
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 |
| San Juan Chancalaito | 9 | 12 | 13 | 14 | 13 | 14 | 14 | 13 | 13 | 12 | 10 | 9 |
| 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 |