Last updated: July 2, 2025
Understanding the UV Index in Ouro Preto do Oeste, Brazil, is essential for protecting your skin and overall health. As a town nestled in a tropical Aw climate, residents and visitors alike experience significant UV exposure, particularly during midday hours, when the index peaks at 10. Being aware of UV levels helps in taking proactive measures to prevent sunburn and long-term skin damage. With maximum values reaching as high as 10 between 11:00 AM and 1:00 PM, it's crucial to know when to seek shade or apply sunscreen to safeguard your skin against potential harm from the sun's rays. Stay informed and enjoy the sunshine safely!
As the sun rises, the UV Index begins its gradual ascent, starting at a mild 1 at 7:00 AM. By 9:00 AM, it escalates to 4, indicating a moderate level of UV exposure. The sun reaches its peak intensity around 12:00 PM, where the index hits a striking 10, signaling a high risk for harm from unprotected sun exposure. Fortunately, this intensity diminishes in the afternoon; by 3:00 PM, it drops to 5, and by 6:00 PM, it plummets to 0. As the day winds down, it's clear that midday is when the sun's rays are most perilous, urging sun safety precautions during those peak hours.
| 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 | 6 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 5 | 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 demonstrates significant seasonal variation, with the highest values occurring from January to April (UV Index 15-16), categorizing these months as extreme risk for UV exposure. From May to August, the index remains high but decreases slightly, hitting a peak of 11 in May and August, categorizing these as very high to extreme risk. September also shows a high UV Index of 12, reinforcing the need for caution during this transitional month. As October through December returns to an extreme level, residents and visitors should prioritize sun safety across the year, especially during high-risk months from January to April and intense late summer outings in May and August. Always use adequate sun protection, including sunscreen and protective clothing, and limit sun exposure during peak 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 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |
| Ouro Preto do Oeste | 15 | 16 | 16 | 15 | 11 | 10 | 10 | 11 | 12 | 15 | 15 | 15 |