Last updated: July 2, 2025
In San Antonio, Peru, being aware of the UV Index is crucial for protecting your skin from harmful ultraviolet rays. Understanding UV levels helps prevent sunburn and promotes long-term skin health, making it essential for both residents and visitors. With a typical climate characterized by high-altitude conditions, San Antonio experiences notable UV exposure, especially during midday hours when the index peaks at a staggering 13. By staying informed about UV levels, you can enjoy the beautiful outdoors while safeguarding your well-being!
As the day unfolds, the UV Index embarks on a thrilling ascent, reaching its peak around 11:00 AM and 12:00 PM at a blazing 13, indicating the need for sun protection. Visitors basking in the sunlight at 10:00 AM encounter a sharp rise to 10, while the early morning hours remain mild, with a low of 1 at 7:00 AM. As the afternoon approaches, the intensity wanes, dropping to a refreshing 5 by 3:00 PM, and further declines as the sun begins its descent, fading to 0 by 7:00 PM. This chart serves as a reminder that while midday sun can be relentless, the early and late hours offer a gentle reprieve for outdoor enthusiasts. Enjoy the sunshine, but don’t forget your sunscreen during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 10 | very high | 15 min |
| 11:00 | 13 | 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 remain strikingly high, consistently categorized as extreme. From January to March, the UV Index reaches its peak at 25, with a burn time of just 10 minutes, meaning visitors and residents should exercise extreme caution. April to June sees a gradual decline with UV Index values ranging from 18 to 12, still maintaining a burn time of 10 minutes. The summer months, July and August, exhibit UV Index levels of 13 to 15, while September to November marks a slight increase, peaking again at 20 in November. Notably, the beginning and end of the year pose the highest risk, making January, February, and November the most critical months for UV exposure. To ensure safety, it is imperative for everyone to wear protective clothing, apply sunscreen regularly, and seek shade during peak hours, particularly during these high-risk months.
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 Antonio | 24 | 25 | 24 | 18 | 14 | 12 | 13 | 15 | 17 | 18 | 20 | 23 |