Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Pereira Barreto, Brazil. With the sun’s rays peaking between 10 AM and 2 PM, it is essential to monitor UV levels to effectively prevent sunburn and protect skin health. In this tropical climate, where the UV Index frequently reaches high levels—like 8 during midday hours—the risk of overexposure increases significantly. Being aware of these UV fluctuations can help you enjoy the sun safely while safeguarding your skin against potential damage.
During the day, the UV Index displays a clear progression, peaking in intensity as time goes on. At 7:00 AM, the index starts at a modest level of 1, indicating minimal risk. By 10:00 AM, it rises sharply to 5, signaling a need for sun protection. The index reaches its zenith between 12:00 PM and 1:00 PM at a notable 8, suggesting that precautions are essential during these hours to prevent skin damage. As the afternoon progresses, it begins to wane, dropping to 6 by 2:00 PM and declining further through the afternoon, reaching 0 by 6:00 PM. Such fluctuations highlight the importance of monitoring UV levels throughout the day to stay safe while enjoying the sun.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 1 | low | 45 min |
09:00 | 2 | low | 45 min |
10:00 | 5 | moderate | 30 min |
11:00 | 7 | high | 25 min |
12:00 | 8 | very high | 15 min |
13:00 | 8 | very high | 15 min |
14:00 | 6 | 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 seasonal UV changes indicate that exposure levels are consistently high, particularly from January to April, where the UV Index remains in the extreme category, peaking at 16 in February and December. High-risk months include January, February, March, April, September, October, and November, as they all feature an extreme UV Index that can lead to sunburn in as little as 10 minutes. Conversely, the summer months of May, June, July, and August experience a drop to very high and high categories, with slightly longer burn times of 15 to 25 minutes. Visitors and residents should take precautions during all months, especially in extreme UV conditions, by seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen to minimize the risk of 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 |
Pereira Barreto | 15 | 16 | 13 | 11 | 8 | 7 | 8 | 10 | 12 | 14 | 14 | 16 |
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 |