Last updated: May 3, 2025
In Sertaozinho, Brazil, staying informed about the UV Index is crucial for safeguarding your skin against harmful ultraviolet radiation. With the region's Aw climate delivering hot and sunny days, understanding UV levels can help you effectively prevent sunburn and enhance your overall skin health. Throughout the day, UV exposure peaks dramatically, particularly around noon with indices reaching as high as 8. By monitoring the UV Index and taking appropriate precautions, residents and visitors can enjoy the beauty of Sertaozinho while minimizing the risks associated with excessive sun exposure.
As the day unfolds, the UV Index reveals a distinct pattern of sun intensity. Starting at a gentle 1 by 7:00 AM, the index gradually climbs, reaching 2 at 8:00 AM and continuing to rise. By 10:00 AM, the UV Index peaks at a robust 6, marking the onset of midday sun exposure. It then surges to a maximum of 8 from 12:00 PM to 1:00 PM, signaling a high risk for unprotected skin. Fortunately, as the afternoon wanes, the index begins to decline, dropping to 6 by 2:00 PM and further decreasing to 3 by 3:00 PM. As the sun sets, the UV Index falls to 2 at 4:00 PM, and by 5:00 PM, it returns to a low 1. The day concludes with minimal UV exposure, recording a 0 by 6:00 PM, persisting until nighttime. Timing your outdoor activities wisely can help you enjoy the sunshine while staying safe!
| 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 | 7 | high | 25 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 |
The UV Index demonstrates notable seasonal fluctuations, indicating that January through April poses a high-risk period for sun exposure, with an extreme rating of 16-13, and a very short burn time of just 10 minutes. Visitors and residents should be particularly cautious during these months, as well as in September to November, which also show extreme UV levels with a burn time of 10 minutes. In contrast, May through August presents a very high risk with slightly longer burn times of 15-25 minutes, peaking in July. As such, regardless of the season, it is crucial to apply sunscreen diligently, wear protective clothing, and limit sun exposure, especially during midday hours, to safeguard against skin damage and other UV-related health issues.
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 |
| Sertaozinho | 16 | 16 | 13 | 11 | 8 | 7 | 8 | 10 | 12 | 13 | 14 | 16 |
| 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 |