Last updated: May 3, 2025
Understanding the UV Index in Bela Vista, Brazil, is essential for protecting your skin and overall health. With a climate that enjoys plenty of sunshine, it's critical to stay informed about UV levels, especially during peak hours when risks are highest, such as between 10:00 AM and 2:00 PM, where the index can reach 8. By being aware of the UV Index, you can take necessary precautions to prevent sunburn and long-term skin damage, ensuring you enjoy the beautiful, sunny days in Bela Vista safely. Whether you’re lounging outdoors or exploring, knowing when to seek shade or apply sunscreen is key to protecting your skin health.
The UV Index throughout the day presented a clear pattern, peaking during the mid-morning to early afternoon hours. Starting at a low 1 at 07:00, the intensity gradually increased, reaching 4 by 09:00. The most critical period for sun exposure occurred between 11:00 and 12:00, where the UV Index hit a high of 8, indicating a very high risk of harm from unprotected sun exposure. As the afternoon progressed, values dipped to 7 at 13:00, and then saw a steady decline, dropping to 5 by 14:00. The UV Index continued to fall, plunging to 1 by 16:00 and eventually down to 0 after 18:00, signaling a safe period for evening outdoor activities. Always remember to take precautions during peak hours for your skin's health!
| 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 | 7 | 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 | 2 | low | 45 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 |
The UV Index experiences significant seasonal fluctuations, peaking during the winter months and late fall with values of 15 in January, February, and December, categorizing exposure as extreme with a burn time of only 10 minutes. As spring approaches, the Index remains high, dropping slightly to 13 in March and 11 in April, continuing to present high risks for sunburn. The UV Index declines to 8 and 9 in the summer months of May through August, where exposure levels are still regarded as very high. A notable rebound occurs in September and October, returning to extreme levels at 11 and 14 respectively, with similarly low burn times. Given this data, residents and visitors should exercise caution during the high-risk months of January to April and September to November, ensuring to use adequate sun protection and limit exposure 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 |
| Bela Vista | 15 | 15 | 13 | 11 | 8 | 7 | 8 | 9 | 11 | 14 | 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 |