Last updated: June 2, 2025
In the sunny landscapes of Boca do Acre, Brazil, awareness of the UV Index is crucial for protecting your skin and ensuring overall health. Understanding the daily fluctuations in UV levels helps residents and visitors alike stay informed about sun exposure, especially during peak hours when the risk of sunburn and long-term skin damage elevates significantly. With a tropical climate characterized by high temperatures and intense sunlight, Boca do Acre can present serious UV exposure risks, particularly between 10 AM and 2 PM, when the UV Index reaches its maximum of 10—a level that demands protective measures. Staying informed allows you to enjoy the beautiful outdoors while safeguarding your skin.
As the sun rises, the UV Index remains low at 1 from 07:00 to 09:00, ideal for early morning outdoor activities. However, as the clock strikes 10:00, it escalates dramatically to 6, urging caution for midday sun exposure. The peak intensity occurs between 12:00 and 13:00, where the UV Index soars to its maximum at 10, signaling a high risk for harm from unprotected sun exposure. As the afternoon unfolds, the index gradually declines, dropping to 8 at 14:00 and tapering down to 5 by 15:00. Finally, by 17:00, it dips back to 1, and by 19:00, it settles at 0, signaling the safe return of evening shadows. Be mindful of sun safety during those critical hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV Index levels exhibit significant seasonal variation, with January through April consistently showing extreme UV levels (index 15-16) and a burn time of just 10 minutes. This trend continues into November, which also has an extreme index of 15. May sees a slight drop to 12, transitioning to a very high index of 10 during June and July, with a slightly extended burn time of 15 minutes. August witnesses a return to extreme levels (index 11), while September and October remain high at 12 and 14, respectively. As a result, the high-risk months for sun exposure are from January to April and October to November, warranting extra caution. Visitors and residents should take precautions during these months—such as applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade—to minimize the risk of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rio de Janeiro UVI | 15 | 14 | 13 | 10 | 7 | 6 | 7 | 9 | 11 | 12 | 13 | 15 |
| Sao Paulo UVI | 16 | 15 | 12 | 11 | 8 | 6 | 7 | 9 | 11 | 13 | 14 | 15 |
| Belo Horizonte UVI | 17 | 16 | 14 | 12 | 9 | 7 | 8 | 10 | 12 | 13 | 14 | 16 |
| Salvador UVI | 14 | 14 | 14 | 13 | 10 | 9 | 9 | 12 | 12 | 15 | 15 | 14 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |
| Boca do Acre | 15 | 15 | 16 | 15 | 12 | 10 | 10 | 11 | 12 | 14 | 15 | 14 |