Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Curitibanos, Brazil, where the climate is characterized by a humid subtropical influence (Cfa). With varying UV levels throughout the day, awareness of these numbers is essential for effective sunburn prevention and promoting overall skin health. During midday hours, when UV levels peak at 5, even a short period of unprotected sun exposure can lead to skin damage. As Curitibanos experiences distinct seasonal shifts and varying sun exposure risks, being informed about the UV Index helps ensure that you enjoy outdoor activities safely and protect your skin from harmful effects.
The UV Index throughout the day exhibits a dynamic pattern, starting at 0 at 7:00 AM and gradually climbing to its peak of 5 by 11:00 AM to 1:00 PM. The sun's intensity then begins to wane, dipping to 4 at 2:00 PM and falling to 2 by 3:00 PM. As the afternoon transitions into evening, the index further declines, reaching 1 at both 4:00 PM and 5:00 PM, before plummeting back to 0 by 6:00 PM. This progression highlights the importance of sun safety measures during peak hours, particularly between 10:00 AM and 1:00 PM when the UV levels are highest.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 0 | low | 45 min |
08:00 | 1 | low | 45 min |
09:00 | 2 | low | 45 min |
10:00 | 3 | moderate | 30 min |
11:00 | 5 | moderate | 30 min |
12:00 | 5 | moderate | 30 min |
13:00 | 5 | moderate | 30 min |
14:00 | 4 | 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 variations, with extreme levels occurring from January to April and again from September to November. The high-risk months for UV exposure are notably January, February, March, April, September, October, November, and December, all classified as extreme with a burn time of just 10 minutes. As summer approaches, the index lowers to high in May and July, with a moderate level in June. Visitors and residents should take proactive measures during high-risk months by applying sunscreen, wearing protective clothing, and seeking shade to minimize harmful UV radiation exposure.
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 |
Curitibanos | 15 | 15 | 13 | 11 | 7 | 5 | 6 | 8 | 11 | 13 | 15 | 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 |