Last updated: July 2, 2025
Understanding the UV Index is crucial for protecting yourself and your loved ones from harmful ultraviolet radiation, especially in Cataguases, Brazil. Awareness of UV levels can significantly aid in preventing sunburn and promoting overall skin health. With a tropical climate and soaring UV exposure—peaking at 7 during midday—residents and visitors alike must be vigilant about sun safety. Whether you're enjoying outdoor activities or simply relaxing in the sun, staying informed about UV risks ensures that your time under the Brazilian sun remains enjoyable and safe.
The UV Index throughout the day paints a vivid picture of sun intensity, starting at a modest 1 at 07:00 and gradually climbing to its peak of 7 from 11:00 to 13:00. This high level signifies a heightened risk for prolonged sun exposure, perfect for sun lovers but cautionary for the rest. From the peak, the index starts to dip, dropping to 5 at 14:00 and dwindling to 1 by 16:00. As the sun begins to set, the UV Index plummets to 0 by 18:00 and remains in the safe zone through the evening. Plan your outdoor activities wisely, ensuring midday sun protection while enjoying the earlier and later hours!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 2 | low | 45 min |
09:00 | 3 | moderate | 30 min |
10:00 | 5 | moderate | 30 min |
11:00 | 7 | high | 25 min |
12:00 | 7 | high | 25 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 experiences significant seasonal variation, with the highest values occurring during the winter months. From January to April, the UV Index remains in the extreme category, peaking at 16 in January and February, where the burn time is only 10 minutes. As we transition into May and June, the index drops to very high (8) and high (6) levels respectively, allowing for slightly longer exposure times of 15 to 25 minutes. Notably, September through December sees a return to the extreme category, particularly in October and November, maintaining a burn time of 10 minutes. Visitors and residents should remain vigilant during these high-risk months, especially from January to April and September to November, taking precautions such as using sunscreen, wearing protective clothing, and seeking shade to minimize the risk of sunburn.
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 |
Cataguases | 16 | 15 | 13 | 11 | 8 | 6 | 7 | 10 | 12 | 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 |