Last updated: June 2, 2025
Understanding the UV Index in Tres Coracoes, Brazil is crucial for safeguarding your skin health and preventing painful sunburns. With its Cwa climate, characterized by warm summers and mild winters, Tres Coracoes experiences varying UV levels throughout the day. Notably, from 10 AM to 2 PM, the UV Index peaks, reaching levels of 6 and 7—indicating a higher risk for sun damage. By staying informed about UV exposure, residents and visitors can protect themselves effectively, enjoying the sunny Brazilian days while minimizing health risks associated with excessive sun exposure.
The UV Index reveals a dynamic day of sun exposure. Beginning at a gentle 1 at 7:00 AM and 8:00 AM, the index gradually rises, hitting 3 by 9:00 AM. A significant surge occurs at 10:00 AM, with the UV Index climbing to 5, peaking at an intense 7 at 12:00 PM. The intensity then begins to decline, with values of 6 at 1:00 PM, dropping to 4 by 2:00 PM, and further decreasing to 3 at 3:00 PM. As the afternoon wanes, the index returns to 1 by 4:00 PM and finally falls to 0 after 6:00 PM, marking a gentler evening. It's a reminder to stay sun-smart during those midday hours when UV exposure is at its highest!
| 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 | 6 | high | 25 min |
| 12:00 | 7 | 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 |
Throughout the year, UV Index levels exhibit significant seasonal changes, with January, February, March, April, September, October, November, and December classified under the extreme exposure category, presenting a high risk for sunburn within just 10 minutes of unprotected sun exposure. In contrast, May and July also fall into the very high category, allowing slightly longer burn times of 15 minutes, while June's high exposure permits 25 minutes before risking harm. The most critical months for UV exposure in this region are from January to April and again in September to November, positioning March and September as pivotal months for UV caution. Residents and visitors should exercise extreme caution during these high-risk months, employing sun protection strategies such as wearing sunscreen, protective clothing, and seeking shade to mitigate potential health risks associated with high UV exposure.
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 |
| Tres Coracoes | 16 | 16 | 14 | 12 | 8 | 7 | 8 | 10 | 12 | 14 | 14 | 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 |