Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Neropolis, Brazil, where the sun can be both a friend and a foe. With a climate known for its warm temperatures and bright blue skies, awareness of UV levels is essential to prevent sunburn and protect skin health. During peak hours—especially between 10 AM and 2 PM, when the UV Index reaches as high as 10—the risk of harmful UV radiation increases significantly. By keeping an eye on the UV Index, you can enjoy the beautiful weather while ensuring your skin remains safe.
The UV Index reveals a dynamic day of sun exposure, starting off gently with a low of 1 at 7:00 AM and 8:00 AM. As the sun climbs higher, the index begins to rise sharply, peaking at 10 by noon, signaling ideal conditions for outdoor activities—though caution is advised. The intensity remains high as it slightly dips to 9 at 1:00 PM and 7 at 2:00 PM, before tapering off in the afternoon. By 4:00 PM, the index drops to 2, and the sun’s intensity continues to fade, reaching 0 by 6:00 PM. This hourly trend underscores the importance of sun safety during peak hours, particularly from 10:00 AM to 2:00 PM, when protection is most crucial.
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 | 8 | very high | 15 min |
12:00 | 10 | very high | 15 min |
13:00 | 9 | very high | 15 min |
14:00 | 7 | high | 25 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 |
The UV Index exhibits extreme levels throughout most of the year, particularly from January to April, where it consistently registers between 16 and 14, with a burn time of only 10 minutes. The months of February, November, and December are especially high-risk, maintaining the maximum UV Index of 16. As the season transitions into May and June, the index drops slightly to 10 and 9, respectively, categorized as very high, allowing for a burn time of 15 minutes. However, exposure remains significant, particularly in July and August, which experience a return to extreme levels and shorter burn times again. Visitors and residents should take precautions during these high-risk months by wearing broad-spectrum sunscreen, seeking shade, and wearing protective clothing, especially during peak sunlight hours.
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 |
Neropolis | 16 | 16 | 14 | 13 | 10 | 9 | 10 | 12 | 13 | 15 | 16 | 16 |