Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Benjamin Constant, Brazil, where the tropical climate can lead to elevated sun exposure. With peak UV levels soaring to 13 around noon, awareness of these UV levels is essential not only for sunburn prevention but also for long-term skin health. By familiarizing yourself with the UV Index, you can take proactive measures to protect your skin during high-risk hours, especially in a region known for its warm, sunny days. Stay informed and enjoy the beautiful Brazilian outdoors responsibly!
During the early hours of the day, the UV Index begins at a gentle 2 at 7:00 AM, gradually climbing to 4 by 8:00 AM. As the sun reaches its zenith, the intensity peaks dramatically, soaring to a striking 13 between 11:00 AM and 12:00 PM—a clear indication to protect your skin. The index then starts to decline after 1:00 PM, dropping to 7 at 2:00 PM and further dwindling to a 4 by 3:00 PM. As the day winds down, the UV exposure decreases significantly, falling to 1 by 5:00 PM and finally settling at 0 after 6:00 PM, inviting a sense of relief from the sun's rays. Make sure to check the UV Index for safe sun practices throughout the day!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 11 | extreme | 10 min |
| 11:00 | 13 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 7 | 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 |
The UV Index experiences notable consistency throughout the year, with extreme levels recorded from January to April, reaching a peak of 16 in February and March. Although there is a slight reduction in UV Index values from May (13) to July (11), the exposure remains high, and the burn time stays constant at just 10 minutes. August sees a slight increase to 12 before September rises again to 13, with October and November holding steady at 14. December rounds out the year with a UV Index of 13. Given this information, it is crucial for visitors and residents to remain vigilant about sun protection, especially during the high-risk months of January through April. Using sunscreen, wearing protective clothing, and seeking shade can help prevent skin damage, even during the cooler months.
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 |
| Benjamin Constant | 15 | 16 | 16 | 15 | 13 | 11 | 11 | 12 | 13 | 14 | 14 | 13 |