Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Pirenópolis, Brazil, a beautiful town known for its stunning landscapes and outdoor activities. The UV Index provides vital information about solar radiation levels, helping you take necessary precautions against sunburn and long-term skin damage. With a tropical climate that often exposes you to elevated UV levels—reaching a peak of 9 around noon—it’s essential to stay informed and protect your skin. Whether you’re exploring the natural wonders or enjoying a sun-soaked day, being aware of the UV Index can make a significant difference in maintaining your skin health. Stay safe and enjoy all that Pirenópolis has to offer!
The UV Index for the day starts off low, with a maximum of 1 at 07:00 and 08:00, providing a gentle introduction to sunlight. As the morning progresses, it climbs gradually, peaking at 9 around 12:00, marking the sun's fierce midday intensity. The index remains high at 8 from 11:00 to 13:00, urging outdoor enthusiasts to seek shade and apply sunscreen. However, by the afternoon, the UV Index begins to taper off, declining to 4 at 15:00 and dropping further to 1 by 17:00, before finally hitting 0 in the evening. This fluctuation highlights the importance of being sun-smart, especially during those critical midday hours when UV exposure can be most damaging.
| 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 | 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 UV Index experiences seasonal fluctuations, with the highest levels occurring in the winter and early spring months. January through April consistently show extreme values, ranging from 16 to 14, indicating a burn time of just 10 minutes. As temperatures rise, May and June drop slightly to very high levels of 10 and 9 respectively, allowing for a marginally increased burn time of 15 minutes. July continues with a very high index at 10, then shifts back to extreme levels in August and September, with values of 12 and 13. The trend remains high into October and November, before dipping to 16 in December. Given these patterns, visitors and residents are advised to take precautions during high-risk months, particularly in the winter and early spring, by using sun protection measures such as sunscreen, hats, and protective clothing, and to remain cautious even in months classified as very high. Always be aware of the UV Index for the day and limit direct sun exposure accordingly.
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 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |
| Pirenopolis | 16 | 16 | 14 | 13 | 10 | 9 | 10 | 12 | 13 | 15 | 15 | 16 |