Last updated: June 2, 2025
Understanding the UV Index in San Bartolo, Peru is essential for maintaining healthy skin and preventing sunburn, especially given the area's BWh climate, characterized by warm temperatures and ample sunshine. Knowing the daily UV levels can help residents and visitors take necessary precautions during peak hours, such as between 11:00 AM and 1:00 PM, when the UV Index reaches a maximum of 10—indicating very high risk. Being informed about local UV exposure risks empowers everyone to enjoy the beautiful San Bartolo beaches while protecting their skin from harmful effects. Stay alert and shield yourself from excessive sun exposure to ensure a vibrant and healthy outdoor experience!
As the sun rises, the UV Index begins its climb, starting at a modest 1 at 07:00. By 08:00, it gently increases to 2, signaling a day of strengthening rays. The intensity peaks around 12:00 with a striking 10, indicating the time for caution and sun protection. As midday passes, the index gradually declines, dropping to 6 at 14:00 before continuing its descent to 4 at 15:00. By 17:00, it returns to a safer 1, and eventually fades to 0 after 18:00, marking a gentle close to the day. This data underscores the importance of seeking shade and wearing sunscreen during the midday hours when the UV exposure is at its most intense.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | 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 | 4 | 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, the UV Index remains particularly high, reflecting the need for care in sun exposure. The high-risk months are primarily from January to April, where the UV Index peaks at 15 in January, February, and November, falling only slightly in other months to 14 or 13. May sees a downward trend to 11, transitioning to very high levels of 10 in June and July, then returning to extreme levels until October. With burn times as low as 10 minutes during peak months, it is crucial for both visitors and residents to take protective measures, such as wearing sunscreen with high SPF, seeking shade, and wearing protective clothing, particularly during these high-risk months. As UV exposure can result in serious skin damage, vigilance is recommended year-round.
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 |
| San Bartolo | 15 | 14 | 14 | 13 | 11 | 10 | 10 | 11 | 13 | 14 | 15 | 14 |
| 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 |