Last updated: July 2, 2025
In Santo Antonio do Monte, Brazil, staying informed about the UV Index is essential for protecting your skin from harmful ultraviolet rays. Understanding UV levels can significantly aid in preventing sunburn and maintaining long-term skin health, especially during the peak hours of exposure. With a Cwa climate, this region experiences a blend of tropical and subtropical conditions, leading to higher UV indexes from late morning to early afternoon, where values can soar up to 8! By keeping an eye on the UV Index, residents and visitors can enjoy the sun safely while minimizing risks associated with overexposure.
At dawn, the UV Index begins its gentle ascent, peaking at 1 by 7:00 AM. As the sun rises higher, the intensity climbs sharply, reaching a notable 8 by noon. This midday sunshine brings about the highest UV exposure between 11:00 AM and 1:00 PM, where the Index holds steady at 8. By 2:00 PM, the levels start to dip, falling to 6 at 2:00 PM, and noticeably lower by the afternoon. By 6:00 PM, the UV Index drops to 0, signaling a retreat of harmful rays as the day gives way to evening. Remember, during peak hours, wearing sunscreen and protective clothing is crucial to safeguard your skin!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 8 | 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 | 2 | 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 exhibit significant seasonal fluctuations, with January to April showing extremely high indices (ranging from 12 to 17), indicating a burn time of only 10 minutes. As the year progresses, UV indices generally decrease from May onwards, though July and August still present high to very high risks (UV Index 8 to 11, burn times of 15 to 25 minutes). September through December return to extreme levels, maintaining a burn time of 10 minutes. The highest risk months are January through April and August to September, making it crucial for both visitors and residents to practice diligent sun safety during these periods. It is advised to seek shade, wear protective clothing, and apply broad-spectrum sunscreen to minimize 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 Antonio do Monte | 17 | 16 | 14 | 12 | 9 | 7 | 8 | 11 | 13 | 14 | 14 | 16 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |