Last updated: July 2, 2025
In Alto Peru, Peru, awareness of the UV Index is crucial for safeguarding your skin against harmful ultraviolet rays. Understanding UV levels is key to preventing sunburn and maintaining long-term skin health, especially in a region where the climate is predominantly Aw (tropical savanna). With peak UV Index values soaring to 12 around midday, residents and visitors must be vigilant about sun exposure, as the risks of overexposure can escalate quickly. Keep informed and take protective measures to enjoy the beautiful Peruvian sun safely!
During the day, the UV Index experiences a significant surge, peaking at 12 between noon and 1 PM, indicating a high risk of harm from unprotected sun exposure. The morning starts off relatively mild, with values of 1 at 7 AM, increasing steadily to 5 by 9 AM. As the clock approaches 10 AM, the index climbs to 8, and by 11 AM, it reaches an intensity of 11. The sun’s power begins to wane after 1 PM, dropping to 9 at 2 PM and then declining further to 6 by 3 PM. The afternoon shadows bring relief as the UV Index dwindles to 3 at 4 PM and falls to 1 by 5 PM before finally settling at 0 post 6 PM. It’s crucial to stay protected during those peak hours, especially between 11 AM and 1 PM!
| 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 | 12 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index experiences significant fluctuations throughout the year, with the highest readings occurring from January to March, where the index reaches a peak of 18 in March. This period is classified as extreme, with a burn time of just 10 minutes, indicating a critical need for protection against sun exposure. Notably, April sees a slight drop to 17, while May dips further to 15. As summer arrives, the UV Index remains notably high at 12 in June and July, before rising again to 13 in August. With September and October reflecting similar levels to earlier months at 16, the risk persists into the late autumn months. November and December maintain a UV Index of 15, underscoring the importance of vigilance year-round. Visitors and residents are advised to prioritize sun safety, utilizing sunscreen, protective clothing, and seeking shade, especially during peak months to minimize the risk of skin damage.
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 |
| Alto Peru | 16 | 17 | 18 | 17 | 15 | 12 | 12 | 13 | 16 | 16 | 15 | 15 |