Last updated: July 2, 2025
In Casacancha, Peru, being aware of the UV Index is crucial for safeguarding your skin and overall health. With the region's high-altitude climate bringing intense sun exposure, understanding UV levels can help you prevent painful sunburns and long-term skin damage. During peak hours, especially between 11:00 AM and 1:00 PM, the UV Index can reach dangerous levels of 12 to 13, indicating a risk of harm from unprotected sun exposure. By keeping an eye on the UV Index, you can take the necessary precautions to enjoy the beautiful Peruvian sun while keeping your skin healthy and safe.
As the sun rises, the UV Index begins at a low 1 at 07:00, gradually climbing to reach 2 by 08:00. The intensity ramps up significantly as the day progresses, peaking at a striking 13 at 12:00. The sun's rays hit their maximum power between 11:00 and 13:00, with a 12 at 11:00 and lingering at 13 until 12:00. After that, the UV Index starts to decline, dipping to 9 by 14:00 and further down to 5 by 15:00. As evening approaches, the index falls to 2 at 16:00, then returns to a safe 1 at 17:00 before wrapping up the day with a zero reading by 18:00. This pattern underscores the importance of sun safety during those peak hours when the UV Index is highest.
| 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 | 9 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV Index levels exhibit a remarkable consistency, remaining in the extreme exposure category from January to December. The highest UV Index, reaching a staggering 21, occurs in January, while the index remains significant at 19 during February, March, October, and November. These months—including January to April—pose the highest risk for sunburn, with a burn time of just 10 minutes. As a result, it is crucial for both visitors and residents to take precautions during these periods, such as wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade whenever possible. Even in June through August, when UV levels slightly decrease, exposure should still be carefully managed. Overall, awareness and protective measures against UV radiation are essential throughout the year to ensure health and safety.
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 |
| Casacancha | 21 | 19 | 19 | 17 | 14 | 12 | 13 | 15 | 17 | 19 | 19 | 18 |