Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Cianorte, Brazil, where the subtropical Cfa climate brings plenty of sunshine and outdoor activity opportunities. With UV levels peaking at 6 during midday—a time when sunburn risks are significantly heightened—being aware of these levels is essential for protecting your skin and maintaining overall health. Regularly monitoring the UV Index helps you take proactive measures against sun damage, ensuring that your time spent outside remains enjoyable and safe. Whether you're planning a family outing or a simple stroll, understanding the UV exposure risks in Cianorte will empower you to make informed choices for your skin's wellbeing.
The UV Index throughout the day tells a compelling story of sun exposure. Starting at a cool 0 at 07:00, the intensity slowly increases, reaching 1 by 08:00 and progressing to 2 at 09:00. The sun moves higher in the sky, and by 10:00, the index climbs to 4, peaking at 6 between 12:00 and 13:00—a clear indication to wear sunscreen and seek shade. After 13:00, the index begins its gentle descent, dropping to 5 at 14:00 and further down to 3 by 15:00. The day's UV activity wanes, going to 2 at 16:00 and back to 1 by 17:00, before returning to a safe 0 from 18:00 onward. Make sure to enjoy the sun thoughtfully during its peak hours!
| 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 | 4 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 6 | high | 25 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 3 | 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 |