Last updated: June 2, 2025
Understanding the UV Index is essential for residents and visitors of Santo Amaro, Brazil, where the sun shines brightly in an Af climate zone. With UV levels peaking at a significant 9 around midday, awareness is key to preventing sunburn and protecting skin health. By keeping an eye on the UV Index, you can enjoy the beautiful outdoors while minimizing your risk of skin damage. Given the region's climate, understanding these levels is crucial for safe sun exposure, especially during the high-risk midday hours. Stay informed and safeguard your skin!
The UV Index on this particular day presents a clear pattern of sun exposure. Starting at a mild level of 1 at 07:00, the intensity rises gradually, peaking at 9 between 11:00 and 12:00, indicating a high risk for skin damage without appropriate protection. As the afternoon progresses, the index begins to decline, dropping to 5 by 14:00 and swiftly decreasing to 1 by 16:00. After 17:00, the UV Index falls to 0, signaling a safe end to sun exposure for the day. For those planning outdoor activities, it’s essential to maximize protection during the peak hours when the index soars to its highest levels!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 9 | 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 |
The UV Index experiences seasonal fluctuations, with the most intense levels occurring during the winter and early spring months, particularly from January to April, where it consistently reaches 14, categorized as extreme. These months, alongside the months of October and November (also with an index of 15), present the highest risk for sunburn, with a burn time of only 10 minutes. As summer approaches, the index dips slightly, dropping to 9 in June and 10 in July, classified as very high and allowing for a burn time of 15 minutes. Despite this slight decrease, the months of August and September again see an extreme rating of 12. Given these conditions, it is crucial for visitors and residents alike to take appropriate precautions during these high-risk months—such as using sunscreen, wearing protective clothing, and limiting outdoor activities during peak sunlight hours—to ensure safety against harmful UV exposure.
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 |
| Santo Amaro | 14 | 14 | 14 | 13 | 11 | 9 | 10 | 12 | 12 | 15 | 15 | 14 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |