Last updated: July 2, 2025
In Barra do Garças, Brazil, understanding the UV Index is crucial for safeguarding your skin health and preventing sunburn. With its tropical climate, the region experiences significant UV exposure, particularly during peak hours when indices can soar to as high as 9, indicating a very high risk of harm from unprotected sun exposure. By staying informed about daily UV levels, you can take proactive measures to protect yourself and enjoy the beautiful, sun-soaked days in Barra do Garças without compromising your well-being.
The UV Index reflects a dynamic day of sun exposure, starting off gently with a maximum of 1 at 7:00 AM and 8:00 AM. As the sun climbs higher, the intensity builds, peaking at a formidable 9 from 12:00 PM to 1:00 PM, signaling a prime time for sun safety awareness. By 11:00 AM, it reaches 8, emphasizing the importance of protective measures. The intensity then gently wanes, dropping to 7 by 2:00 PM, before declining to 5 at 3:00 PM, and further dimming to 3 by 4:00 PM. As the day winds down, the UV Index diminishes significantly, returning to 1 at 5:00 PM and 6:00 PM, and finally tapering off to 0 by 7:00 PM. This chart highlights the importance of staying vigilant under the sun, particularly during those midday hours when UV exposure is at its peak.
| 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 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 7 | high | 25 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, the UV Index in the region displays notable seasonal variations, with extreme values recorded from January to April and again in late summer and fall. The highest risk months are January (UV Index 15), February (UV Index 16), and December (UV Index 16), where sun exposure should be limited to 10 minutes to avoid severe burns. In contrast, May to July sees a drop to very high levels, allowing for slightly longer exposure times of 15 minutes. As visitors and residents plan their outdoor activities, it is crucial to remain vigilant, particularly during the high-risk months, and to employ protective measures such as wearing sunscreen, hats, and sunglasses, especially during peak sun hours. Always monitor the UV Index and adapt your sun safety practices accordingly!
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 |
| 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 |
| Barra do Garcas | 15 | 16 | 14 | 12 | 10 | 8 | 9 | 11 | 12 | 15 | 15 | 16 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |