Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Encruzilhada, Brazil, where intense sun exposure is a part of daily life. As the UV levels in this tropical climate can soar, particularly between 10 AM and 2 PM, being aware of these readings helps in preventing sunburn and protecting overall skin health. With maximum UV Index values reaching as high as 9, it is essential to take precautions to minimize risks associated with harmful rays. Staying informed about the UV Index not only promotes personal well-being but also encourages a healthier lifestyle under the vibrant Brazilian sun.
The UV Index for the day shows a striking increase in intensity, peaking between 11:00 AM and 12:00 PM with a high of 9. Early morning hours are relatively mild, starting at 1 at 7:00 AM and gently rising to 2 by 8:00 AM. As the sun climbs higher, the index sharply escalates to 4 by 9:00 AM and reaches its pinnacle at 10:00 AM with 7. After its peak, the index begins to decline, dropping to 5 by 2:00 PM and further cooling off to 3 at 3:00 PM. By late afternoon, the values diminish significantly as dusk approaches, with readings at 1 by 4:00 PM and eventually 0 by 6:00 PM. This daily pattern highlights the importance of sun safety, especially during those peak hours when UV exposure is at its highest.
| 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 | 7 | high | 25 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 |
Throughout the year, the UV Index exhibits significant seasonal variation, with extreme levels predominantly occurring from January to April, and continuing in August and November. The highest intensity is observed in January, February, and November, where the UV Index reaches 16, presenting a very high risk of harm from unprotected sun exposure, with a burn time of just 10 minutes. Visitors and residents are strongly advised to take precautions during these months, including wearing protective clothing, using broad-spectrum sunscreen with a high SPF, and seeking shade to minimize UV exposure. While June and July present a slightly lower risk at 9 and 10 respectively, they are still categorized as very high, and protection is recommended.
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 |
| Encruzilhada | 15 | 15 | 14 | 13 | 11 | 9 | 10 | 12 | 13 | 14 | 16 | 15 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |