Last updated: May 3, 2025
In Tres Coroas, Brazil, awareness of the UV Index is crucial for maintaining skin health and preventing sunburn. With the region's Cfa climate, residents and visitors face fluctuating UV levels throughout the day, peaking at a high of 6 between midday and early afternoon. Understanding these UV levels not only helps protect against immediate effects like sunburn but also contributes to long-term skincare strategies, minimizing the risk of skin damage. Staying informed about the UV Index is an essential step for anyone enjoying the beautiful outdoors of Tres Coroas, ensuring sun exposure is both safe and enjoyable.
Throughout the day, the UV Index escalates to its peak between 12:00 PM and 1:00 PM, reaching a high of 6—a clear indicator to stay protected from the sun's rays. Early morning hours see a gentle start, with a maximum 1 at 7:00 AM and 8:00 AM, gradually rising to 2 by 9:00 AM. As the sun climbs, so does the intensity, spiking to 5 at 11:00 AM and maintaining a steady 6 for the peak hours. Following this brief burst of intensity, the UV Index dwindles swiftly, dropping to 4 by 2:00 PM, then further decreasing to 3 at 3:00 PM, and tapering off to 1 by 4:00 PM. Finally, as daylight fades, the index plummets to 0 by 6:00 PM, marking the end of a vibrant, sunlit day. Remember to stay safe and protect your skin, especially during midday hours!
| 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 | 4 | moderate | 30 min |
| 15:00 | 3 | moderate | 30 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 experiences significant variations throughout the year, with January, February, March, October, November, and December classified as high-risk months due to their extreme ratings, consistently reaching UV Index values of 14 or higher and a burn time of just 10 minutes. As spring approaches, even April remains a concern with its very high UV Index of 10 and a burn time of 15 minutes. In contrast, the summer months of June and July see a moderate risk, with an Index of 5 and longer burn times of 30 minutes. May and August display a high risk, with UV ratings of 6 and 7 respectively. As the seasons transition to fall, September reports a very high risk once more with a burn time of 15 minutes. Considering these fluctuations, it is crucial for both visitors and residents to remain vigilant during high-risk months by using appropriate sun protection strategies, such as sunscreen and protective clothing, especially when spending extended periods outdoors.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tres Coroas | 14 | 14 | 12 | 10 | 6 | 5 | 5 | 7 | 10 | 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 |