Last updated: August 1, 2025
In Canguçu, Brazil, understanding the UV Index is crucial for safeguarding your skin and overall health. Awareness of UV levels plays a vital role in preventing sunburn and long-term skin damage, particularly in this region characterized by a humid subtropical climate (Cfa), which can heighten exposure risk. With midday UV Index readings peaking at 4, it's essential to take precautions during the sun's strongest hours. Stay informed and protect yourself as you enjoy the beautiful, sunlit days in Canguçu!
The UV Index throughout the day clearly illustrates its early morning calm before reaching the peak around midday. Starting at a maximum of 0 at 07:00, the index gradually rises to 1 by 08:00 and remains slight until it hits 2 at 10:00. The real intensity is felt between 11:00 and 13:00, where it peaks at 4, emphasizing the importance of sun protection during these hours. As the afternoon unfolds, the index steadily declines, dropping back to 2 by 15:00 before tapering off to 1 at 16:00 and returning to 0 by 18:00. Overall, this data underscores the significant variation of UV exposure throughout the day, encouraging us to be mindful of sun safety during its highest points.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | 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 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index experiences significant seasonal fluctuations, with extreme levels dominating from January to March, where short burn times of just 10 minutes can lead to skin damage. As we transition into April, the index drops slightly to 9, categorized as very high, allowing for a marginally longer burn time of 15 minutes. This trend continues into September with another peak at 9, necessitating vigilance during this time. The summer months of May, June, and July see a reduction to moderate levels, providing burn times of 30 minutes—a bit safer but still important to maintain sun protection. In contrast, August spikes to 6 (high), requiring 25 minutes of careful sun exposure. As the year closes out, October and November return to extreme levels, and December peaks at an alarming 15 with only 10 minutes safe exposure. Therefore, residents and visitors should remain vigilant and practice sun safety, especially during high-risk months from January to March and again in October and November, ensuring they protect their skin effectively throughout the year.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cangucu | 14 | 14 | 12 | 9 | 5 | 4 | 4 | 6 | 9 | 12 | 14 | 15 |
| 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 |
| 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 |