Last updated: May 3, 2025
Understanding the UV Index is essential for residents and visitors in Cianorte, Brazil, where the typical Cfa climate brings warm temperatures and significant sunlight exposure year-round. Being aware of UV levels helps you prevent sunburns and protect your skin health, especially during peak hours when indices can reach as high as 8. With Cianorte's sunny disposition, it's crucial to monitor the UV Index regularly to minimize your risk of skin damage while enjoying the outdoors. Stay informed, stay safe, and make the most of Cianorte’s beautiful sunny days!
As the day breaks, the UV Index gradually rises, peaking at a robust 8 at 12:00 PM, signaling the sun's intensity is at its highest. Starting from a mild 1 at 07:00 AM and 08:00 AM, the UV levels steadily climb, hitting 5 by 10:00 AM. By 11:00 AM, a brisk 7 indicates that sun safety measures are essential. The intensity slightly declines after noon, tapering off to 6 at 2:00 PM, and then gradually decreases to a 4 by 3:00 PM. By evening, the UV Index drops back to a mere 1 at 5:00 PM and ultimately falls to 0 after 6:00 PM, signaling a safe return home as the sun sets. Keep this UV pattern in mind for outdoor activities to protect your skin and enjoy the day!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index experiences significant seasonal changes, with the highest levels seen from January to April, where it consistently falls within the extreme exposure category (UV Index values of 15 to 13). May marks a slight decrease to a very high category (UV Index 8), leading into a relatively lower high category during June and July (UV Index 6 to 7), before rising again in August with another very high rating. As summer turns to fall, September sees a jump back to extreme levels, similar to the winter months of October, November, and December. Visitors and residents should be especially cautious and limit their sun exposure from November through April and in September, as these months highlight peaks in the extreme UV Index category with a burn time of just 10 minutes. It is advisable to wear protective clothing, use sunscreen, and seek shade during these high-risk periods to ensure 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 |
| Cianorte | 15 | 14 | 13 | 11 | 8 | 6 | 7 | 9 | 11 | 14 | 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 |