Last updated: June 2, 2025
In the stunning locale of San Cristobal, Peru, being aware of the UV Index is essential for maintaining healthy skin and preventing sunburn. With its unique climate characterized by an ET zone, residents and visitors alike can experience significant UV exposure, especially during the peak hours of 10 AM to 2 PM when the index often reaches its highest levels of 10. By understanding these UV levels, you can take proactive steps to protect yourself from harmful rays, ensuring that your outdoor adventures are not only enjoyable but also safe. Stay informed and safeguard your skin with simple precautions while soaking in the beauty of San Cristobal!
The UV Index today began its ascent at a mild level of 1 at 7:00 AM, but soon picked up momentum. By 10:00 AM, it soared to 8, peaking at a significant 10 from 11:00 AM to 12:00 PM, signaling a time for sun protection. As the afternoon rolled in, the intensity started to wane, dropping to 9 at 1:00 PM and then descending to 6 by 2:00 PM. The sun's rays softened further, concluding the day with a gentle 3 at 3:00 PM and returning to a low 1 by 5:00 PM. Finally, the UV Index waned to 0 by 6:00 PM, marking the end of a day defined by fluctuating sunshine intensity.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 1 | 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 demonstrate significant fluctuations, with extreme exposure categories prevalent during the winter and spring months. From January to April, the index remains consistently high, peaking at 19 in February, indicating a burn time of just 10 minutes. These months are classified as high-risk, requiring heightened sun protection measures. May sees a slight decrease to a UV Index of 12, transitioning to a very high category in June at 10 before returning to extreme levels in July through September. Interestingly, the fall months of October and November maintain similar extreme indices of 18. Residents and visitors are strongly advised to prioritize sun safety, utilizing sunscreen, wearing protective clothing, and limiting sun exposure, especially during the high-risk months between January and April.
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 |
| San Cristobal | 18 | 19 | 17 | 15 | 12 | 10 | 11 | 14 | 16 | 18 | 18 | 18 |