Last updated: July 2, 2025
Understanding the UV Index is crucial for the residents and visitors of Una, Brazil, where the climate is tropical and sun exposure is a daily reality. With UV levels peaking at a high of 9 around noon, awareness of these fluctuations can make a significant difference in sunburn prevention and overall skin health. During a typical day, the UV Index can escalate quickly, posing risks especially from late morning to early afternoon. Staying informed about the UV Index helps ensure that you enjoy the beautiful, sunny days in Una while protecting your skin from harmful effects.
The UV Index for today showcases a striking peak between 11:00 AM and 12:00 PM, where it reaches a high of 9, indicating a high risk of harm from unprotected sun exposure. As the day progresses, the index begins to taper off, transitioning to a 5 at 2:00 PM and then dropping further to 3 by 3:00 PM. The late afternoon brings a noticeable decline, finishing off with 1 at 4:00 PM and fading to 0 after 6:00 PM. If you're planning outdoor activities, the optimal time to soak up the sun safely is definitely before noon! Don’t forget your sunscreen during those peak hours!
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 | 9 | 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 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 |