Last updated: June 2, 2025
Understanding the UV Index in Aguas Vermelhas, Brazil is essential for ensuring your skin's health and preventing sunburn. With the region's Aw climate, characterized by warm temperatures and significant sunlight exposure, knowing the daily UV levels can help residents and visitors alike plan their outdoor activities thoughtfully. The UV Index can reach a peak of 9 around noon, indicating a high risk for harm from unprotected sun exposure. By staying informed, you can enjoy the beautiful Aguas Vermelhas landscape while protecting yourself from potential skin damage.
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 |
The UV Index data reveals significant seasonal fluctuations, with extreme exposure levels persisting from January to May, and again in August, September, October, and November. The months of January to April consistently feature a very high UV Index, peaking at 16 in January and November, with a burn time of just 10 minutes. Transitioning into summer, June and July present a slightly lower but still considerable risk, with a UV Index of 9 and 10 respectively, allowing for a burn time of 15 minutes. Visitors and residents should take precautions during these high-risk months—particularly from January to May—and don protective clothing, use sunscreen with a high SPF, and seek shade, especially between 10 AM and 4 PM when UV radiation is at its peak. Staying informed and vigilant can help minimize the risk of UV exposure year-round.
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 |
| Aguas Vermelhas | 16 | 15 | 14 | 13 | 11 | 9 | 10 | 12 | 12 | 14 | 16 | 15 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |