Last updated: July 2, 2025
Understanding the UV Index in Piedra Blanca, Peru, is vital for maintaining skin health and preventing sunburn, especially in a region characterized by a hot semi-arid climate (BWk). With UV levels peaking at 9 between 11:00 AM and 12:00 PM, awareness of these fluctuations can help individuals take proactive measures against the harmful effects of sun exposure. As the sun rises higher, the risk of UV damage increases, making it essential to monitor these levels and protect your skin accordingly. Stay informed about the UV Index to enjoy the beautiful sunshine while keeping your skin safe!
The UV Index rises and falls dramatically throughout the day, showcasing how the sun's intensity varies with time. Starting at a mild 1 at 7:00 AM, it gradually climbs to reach a peak of 9 between 11:00 AM and 12:00 PM, where sun protection is crucial. As the afternoon progresses, the index begins to dip — descending to 5 by 2:00 PM and tapering off to a safe 1 by 4:00 PM. Finally, the sun sets with the UV levels dropping to 0 after 6:00 PM, indicating it’s safe to enjoy the evening outdoors without worry. Stay vigilant during those midday hours to protect your skin!
| 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 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 5 | moderate | 30 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, the UV Index in this region exhibits significant variability, with the highest levels occurring during the winter and early spring months. January and February consistently show an extreme UV Index of 16, with a rapid burn time of just 10 minutes. This pattern continues through March and April, where UV levels remain extremely high at 14 and 12, respectively. The risk temporarily decreases in May and June, dropping to very high levels of 10 and 8, but quickly escalates again in August and September, reaching extreme levels once more. Notably, October and November also present high UV risks, maintaining extreme scores. Residents and visitors are advised to take precautions during these high-risk months—particularly from January to April and again from August to November—by applying sunscreen, wearing protective clothing, and limiting sun exposure to reduce 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 |
| Piedra Blanca | 16 | 16 | 14 | 12 | 10 | 8 | 9 | 11 | 13 | 15 | 16 | 16 |
| 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 |