Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Una, Brazil, where the tropical climate can lead to heightened sun exposure. With UV levels often peaking at 8 during midday, awareness of these fluctuations is essential for preventing sunburn and safeguarding skin health. The significance of tracking UV exposure cannot be overstated, especially in a region where the sun’s intensity can swiftly transition from moderate to high. By staying informed about the UV Index, you can better protect yourself and enjoy the beautiful outdoors without compromising your well-being.
The UV Index begins its day at a low 1 at 07:00, gradually rising as the sun climbs higher. By 09:00, it reaches a moderate 5, signaling increased sun exposure risk. The peak intensity occurs between 11:00 and 12:00, with the UV Index reaching a maximum of 8—a reminder to seek shade and protect your skin! As the afternoon progresses, the index dips to 7 at 13:00 and then decreases further to 5 at 14:00. A gentle decline continues into the evening, with values falling to 2 by 15:00 and eventually 0 as the sun sets around 19:00. Stay mindful of these changes to ensure your safety under the sun!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 2 | low | 45 min |
09:00 | 5 | moderate | 30 min |
10:00 | 7 | high | 25 min |
11:00 | 8 | very high | 15 min |
12:00 | 8 | very high | 15 min |
13:00 | 7 | high | 25 min |
14:00 | 5 | moderate | 30 min |
15:00 | 2 | low | 45 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 displays significant seasonal fluctuations, with the highest levels occurring during the winter and early spring months. From January to April, the UV Index peaks at 14-15 and is categorized as extreme, indicating a very short burn time of just 10 minutes. As temperatures rise, May through July see a slight decrease in intensity, dropping to a very high range of 8-10 but still necessitating caution with burn times extending to 15 minutes. In August and September, the UV Index escalates back to extreme, peaking again in November and December. Visitors and residents should exercise extreme caution during these high-risk months, particularly from January to April and August to November, ensuring they use sun protection measures such as sunscreen, hats, and protective clothing when exposed to sunlight.
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 |
Una | 14 | 15 | 14 | 13 | 10 | 8 | 9 | 11 | 12 | 14 | 15 | 15 |
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 |