Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Vazante, Brazil, where the warm climate can lead to significant sun exposure. Being aware of UV levels helps with sunburn prevention and supports long-term skin health, making it essential to monitor these levels throughout the day. With a typical tropical climate that peaks at a UV Index of 9 around noon, the risk of skin damage increases sharply during late morning and early afternoon. By prioritizing UV awareness, you can enjoy the beautiful sun in Vazante while protecting your skin from harmful rays.
At 07:00, the UV Index starts off low at 1, indicating minimal risk for sun exposure. As the day progresses, it climbs to 3 by 09:00, still manageable but worth a slight caution if spending time outdoors. The real intensity kicks in around 10:00, reaching a moderate 6, and peaks at 12:00 with a high 9, when sun protection becomes essential. From 13:00 to 14:00, the UV Index remains strong at 8 and 7, respectively, prompting outdoor enthusiasts to seek shade or apply sunscreen liberally. The late afternoon sees a gradual decline; at 15:00, it drops to 4, then to 2 by 16:00, signaling a safe period for evening activities. As daylight fades, the UV Index plummets to 1 by 17:00 and finally 0 by 18:00, making the evening hours safe for all without the worry of harmful UV rays. Plan your day wisely to enjoy the sun safely!
| 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 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 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 significant fluctuations throughout the year, with extreme levels dominating the first four months, peaking at a UV Index of 16 in January, February, November, and December, where burn time is just 10 minutes. April and August also see extreme levels of 12 and 11, respectively, while March and September remain high at 14 and 13. May to July moderate to very high levels, with indices ranging from 8 to 10, allowing for slightly longer exposure times of 15 minutes. Visitors and residents should be particularly cautious during the high-risk months of January to April and August to November, where protective measures are essential due to rapid skin damage potential. Advised actions include seeking shade, wearing protective clothing, and applying sunscreen frequently to mitigate the risk of UV-related harm.
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 |
| Vazante | 16 | 16 | 14 | 12 | 10 | 8 | 9 | 11 | 13 | 14 | 15 | 16 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |