Last updated: August 1, 2025
Understanding the UV Index in Fernandopolis, Brazil, is crucial for protecting your skin from the harmful effects of ultraviolet radiation. With a tropical climate that often features high UV levels, being aware of the daily UV index can help you prevent sunburn and safeguard your long-term skin health. For instance, peak UV levels in Fernandopolis can reach as high as 8 between 12:00 PM and 1:00 PM, presenting significant risks for sun exposure. By staying informed about UV levels, you can enjoy the sun while taking the necessary precautions to keep your skin safe and healthy.
At dawn, the UV Index remains low, peaking at 1 by 08:00. As the sun rises higher, a notable increase occurs, reaching 3 at 09:00 and escalating dramatically to a maximum of 8 from 12:00 to 13:00. This midday surge indicates a higher risk for sun exposure, making it essential to take precautions such as wearing sunscreen and protective clothing. The intensity then gradually declines, dropping to 4 by 15:00, and continuing its descent to 0 by 19:00, marking the end of the sun’s peak influence for the day. Stay mindful of these hourly fluctuations to enjoy the sun safely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV index levels vary significantly, with January to April consistently experiencing extreme exposure levels, where the burn time is as short as 10 minutes. The months of January (UV Index 15) and February (UV Index 16) are particularly high-risk, warranting extra caution for sun exposure. As the seasons shift, May marks a transition to very high (UV Index 9), giving way to high (UV Index 7) levels in June. The summer months—July and August—remain critically high, also categorized as very high with a burn time of 15 minutes. As summer concludes, September sees a return to the extreme category (UV Index 12), continuing through October and November. Visitors and residents are strongly advised to wear appropriate sun protection during these high-risk months, particularly from January to April and again in September and October, to safeguard against harmful UV radiation and minimize sunburn risk.
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 |
| Fernandopolis | 15 | 16 | 13 | 11 | 9 | 7 | 8 | 10 | 12 | 14 | 15 | 16 |
| 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 |