Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Lajas, Peru, where the unique Cwb climate contributes to varying levels of ultraviolet radiation throughout the day. With peak UV readings reaching as high as 13 during midday hours, awareness of these levels is essential for preventing sunburn and promoting skin health. The intense sunlight, especially from 9 AM to 2 PM, poses significant risks, making it vital to protect yourself adequately with sunscreen and appropriate clothing. Stay informed and take proactive measures to enjoy the beautiful outdoors in Lajas while safeguarding your skin!
As the day unfolds, the UV Index begins its ascent at 07:00, peaking at a remarkable 13 during the 12:00 to 13:00 hour, indicating optimal sun exposure for avid sun-worshippers. The maximum intensity is observed at 11:00 with an impressive score of 11, urging caution as midday rays can be especially harsh. Following this peak, the index gradually declines, dropping to 10 by 14:00, and steadily tapering off, signaling a safer environment for outdoor activities in the late afternoon and evening. By 19:00, the UV Index plummets to 0, allowing evening strollers to bask in the fading sunlight without worry. Remember, when the sun is at its highest, embrace protection to enjoy the outdoors safely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | 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 | 10 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index remains remarkably high throughout the year, with an extreme exposure category consistently across all months. The highest values occur from March to May, peaking at 18, making these months particularly high-risk for sunburn, with a burn time of just 10 minutes. Visitors and residents should be especially cautious during this period, ensuring they use broad-spectrum sunscreen, wear protective clothing, and seek shade when possible. Moving into the summer months, June to August, the UV Index slightly decreases but remains significant at 13 to 14, maintaining a 10-minute burn time. September through November sees a return to higher indices, with rates around 16 to 17 and similar burn times. Year-round precautions are essential for avoiding skin damage and ensuring good health during outdoor activities.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Callao UVI | 14 | 14 | 14 | 12 | 10 | 9 | 10 | 11 | 12 | 13 | 14 | 13 |
| Lima UVI | 14 | 14 | 14 | 12 | 10 | 9 | 10 | 11 | 12 | 13 | 14 | 13 |
| Trujillo UVI | 15 | 15 | 15 | 14 | 12 | 11 | 11 | 11 | 13 | 14 | 14 | 14 |
| Chiclayo UVI | 14 | 15 | 15 | 14 | 13 | 11 | 11 | 12 | 15 | 14 | 14 | 13 |
| Arequipa UVI | 18 | 17 | 17 | 15 | 12 | 10 | 11 | 13 | 15 | 17 | 18 | 17 |
| Lajas | 17 | 17 | 18 | 18 | 15 | 13 | 13 | 14 | 17 | 17 | 16 | 16 |