Last updated: June 2, 2025
Understanding the UV Index in Janauba, Brazil is essential for safeguarding your skin and overall health. With its tropical savanna climate, Janauba experiences significant sun exposure, particularly between 10 AM and 2 PM when UV levels peak. By staying informed about these levels, residents can prevent sunburns and reduce the risk of long-term skin damage. Whether you're spending a day outdoors or simply commuting, being aware of the UV Index helps you make informed decisions about protection, ensuring you enjoy the beautiful Brazilian sun safely.
At 07:00, the UV Index begins its ascent at a mild level of 1. By 08:00, it rises to 2, providing a gentle reminder of the sun's presence. A noticeable leap occurs at 09:00, reaching 4 as outdoor activities start to pick up. The intensity peaks sharply at 11:00, where it hits 8, marking the midday sun's strength. The highest point is at 12:00, with a staggering 9, urging caution for sun-sensitive individuals. As the afternoon progresses, the index gradually declines to 5 by 14:00 and further to 3 at 15:00. By 16:00, it falls to 1, and by 18:00, the UV Index drops to 0, signaling a safe return outdoors as the sun sets, followed by a complete absence of UV radiation by 19:00. Enjoy the sunshine, but remember—protection is key 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 | 7 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 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 exhibits significant seasonal variations, with the highest readings occurring during the winter and late fall months. **From January to April, the UV Index remains consistently extreme, peaking at 16 in December and dropping slightly to 13 in April. The risk is particularly acute in February (UV Index 15) and November (UV Index 15), necessitating vigilant sun protection. As summer arrives, the index slightly declines, with June and July recording a very high index of 9 and 10, respectively, allowing for a longer burn time of 15 minutes. However, as fall sets in, August and September return to extreme levels (12), before transitioning back to winter’s extremes. Visitors and residents should take precautions during high-risk months by applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade, especially during peak sun hours. Given the consistently high UV levels year-round, staying aware and prepared is essential for skin safety.
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 |
| Janauba | 15 | 15 | 14 | 13 | 11 | 9 | 10 | 12 | 12 | 14 | 15 | 16 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |