Last updated: July 2, 2025
Understanding the UV Index in Rio Bananal, Brazil is essential for safeguarding your skin and overall health. With the tropical climate typical of this region, residents and visitors alike are often exposed to varying levels of ultraviolet radiation throughout the day. The significance of being aware of UV levels cannot be overstated, as it helps in preventing sunburn and reducing the risk of long-term skin damage. During peak sun hours, especially between 10 AM and 2 PM, the UV Index can reach highs of 8, signaling a strong risk of harm from unprotected sun exposure. Stay informed and take the right precautions to enjoy the beautiful sunshine of Rio Bananal while keeping your skin safe!
As the sun rises, the UV Index begins its ascent, starting at a gentle 1 by 7:00 AM. By 8:00 AM, it nudges up to 2, signaling a mild increase in UV exposure. The intensity heats up quickly, reaching a moderate 4 by 9:00 AM, before hitting its peak of 8 from 11:00 AM to 12:00 PM. This is the prime time for sun safety awareness! After noon, the UV Index gradually declines; by 3:00 PM, it recedes to 3, and as the day wanes, it drops significantly to 1 by 4:00 PM. By evening, UV levels have diminished, reaching 0 by 6:00 PM, offering a reprieve from the sun’s rays.
| 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 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 7 | high | 25 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 |
During the year, UV index levels show significant variation, with January to April consistently experiencing extreme levels (UV Index 15-12) and minimal safe exposure times of just 10 minutes, indicating high-risk months for skin damage. This trend continues with a notable increase in November and December, which also see extreme UV conditions. May marks a shift to very high exposure (UV Index 9) with a slightly extended burn time of 15 minutes. Throughout the summer months, June to August, UV levels remain high to very high (UV Index 7-10), allowing for longer safe exposure times of up to 25 minutes in June before returning to 15 minutes in July and August. September and October then revert to extreme conditions (UV Index 12-14) with a reduced burn time of 10 minutes. Given these fluctuations, it is crucial for visitors and residents to adopt protective measures—such as wearing sunscreen, protective clothing, and seeking shade—particularly during the high-risk months of January to April and September to November.
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 |
| Rio Bananal | 15 | 15 | 13 | 12 | 9 | 7 | 8 | 10 | 12 | 14 | 15 | 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 |