Last updated: July 2, 2025
In the stunning landscapes of Chapada dos Guimarães, Brazil, being aware of the UV Index is crucial for protecting your skin and ensuring your overall health. Understanding UV levels helps you take necessary precautions against sunburn and long-term skin damage, especially during peak hours when exposure is at its highest. With a climate that tends to amplify these risks, particularly under the bright and intense sun, it's essential to stay informed about daily UV fluctuations. The UV Index here can soar to 9 between 11:00 AM and 1:00 PM, posing significant risks if proper measures aren’t taken. Stay vigilant and enjoy the beauty of Chapada dos Guimarães safely!
The UV Index shows an engaging fluctuation throughout the day, starting from a modest 1 at 7:00 AM, perfect for early risers who enjoy a gentle sun. As the hours progress, the index climbs steadily, reaching its peak at 11:00 AM and 12:00 PM with a striking 9, indicating intense exposure risk. Sun-seekers should take extra precautions during these hours. The intensity begins to wane by 3:00 PM, dropping to 3, and settles back down to 1 by 4:00 PM through 5:00 PM, eventually fading to 0 by 6:00 PM. This data underscores the importance of sun safety, especially during the midday hours when the sun is at its fiercest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 6 | high | 25 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 |
Throughout the year, UV Index levels display significant fluctuations, with the highest values observed during the winter months of January to March, maintaining a remarkable 16, categorized as extreme, resulting in a burn time of just 10 minutes. Following this peak, April shows a slight decline to 13 but remains in the extreme category, while May and June moderate somewhat to very high levels of 10 and 9, respectively, allowing for a slightly longer burn time of 15 minutes. August and September see a resurgence in the UV Index, returning to extreme levels of 11 and 12. The months of October and November remain critical, also classified as extreme with an index of 15. Given the recurring high-risk months from January to March, as well as August and September, it is paramount for visitors and residents to take appropriate precautions by wearing sunscreen, protective clothing, and seeking shade, especially when outdoors 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 |
| Chapada dos Guimaraes | 16 | 16 | 14 | 13 | 10 | 9 | 9 | 11 | 12 | 15 | 15 | 16 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |