Last updated: July 2, 2025
Understanding the UV Index in Demerval Lobão, Brazil is crucial for protecting your skin from harmful ultraviolet rays. With peak UV levels reaching as high as 11 during midday, awareness of UV exposure is key to preventing sunburn and maintaining overall skin health. This tropical climate has its charm, but it also comes with increased UV risks, especially between 10 AM and 2 PM, when sun intensity is at its highest. By staying informed about daily UV levels, residents can take necessary precautions to enjoy the sun safely and protect their skin from long-term damage.
The UV Index throughout the day paints a vivid picture of solar intensity, peaking sharply in the late morning. At 07:00, the UV Index starts off modestly at 1, but by 08:00, it climbs to 3, indicating a gradual increase in sunlight. As the day progresses, it reaches 5 at 09:00 and then escalates dramatically to 8 by 10:00. The sun's strength hits its zenith at 11:00 with a striking 10, peaking even further at 12:00, where it soars to 11—an optimal time for sun protection. After this high, the UV Index begins to wane, falling back to 10 at 13:00, before declining steadily to 4 at 15:00, 2 at 16:00, and eventually drifting down to 1 by 17:00. As dusk approaches, the UV Index drops to 0 by 18:00, signaling a safe end to sun exposure for the day. Such daily fluctuations highlight the importance of being mindful of UV levels, especially during midday hours.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 4 | 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 data reveals extreme exposure levels throughout the year, with consistently high values of 14 to 16 from January to April, marking these months as critical for sun safety. March stands out as the month with the highest UV Index of 16, indicating increased risk for sunburn with only 10 minutes of unprotected exposure. Although UV levels slightly decrease during the summer months (June to August), they remain in the 11 to 13 range, still categorized as extreme. By November and December, UV levels return to 14, maintaining that high-risk status. Visitors and residents are strongly advised to protect themselves year-round by wearing sunscreen, sunglasses, and protective clothing, and to seek shade whenever possible, especially during peak sun 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 |
| Demerval Lobao | 14 | 14 | 16 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 14 | 14 |