Last updated: July 2, 2025
Understanding the UV Index is vital for residents of Breves, Brazil, where the tropical climate brings both beautiful sunshine and significant sun exposure risks. With UV levels frequently peaking at 11 during the midday hours, awareness of these values can play a crucial role in preventing sunburn and protecting skin health. By monitoring the UV Index, you can take the necessary precautions to enjoy the sun safely while minimizing the potential for long-term skin damage. So, whether you’re planning a day outdoors or simply enjoying the warmth of Breves, knowing how to navigate the UV risks is essential for a healthy lifestyle.
At dawn, the UV Index starts at a gentle 1 by 7:00 AM, gradually rising as the sun climbs higher in the sky. By 9:00 AM, it reaches a moderate 4, urging early risers to stay vigilant. The intensity peaks at noon, hitting a scorching 11, indicating a high risk of harm from unprotected sun exposure. This peak continues until 1:00 PM, where it remains at 11 before beginning its descent. The afternoon sees a noticeable drop, with the index falling to 6 by 3:00 PM and further decreasing to 3 by 4:00 PM. As the day winds down, the UV Index drops to a safe 1 by 5:00 PM and finally falls to 0 by 7:00 PM, signaling the end of the sun's powerful rays. Stay informed and protect your skin during those peak hours!
| 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 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 6 | high | 25 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 |
The UV Index typically remains extreme throughout the year in this region, with values peaking at 16 in March. From January to May, the UV Index hovers between 14 and 16, indicating a consistent high risk for sun exposure, with a rapid burn time of just 10 minutes. As the year progresses into June through August, there is a slight decrease, with the UV Index ranging from 11 to 12, but the exposure category remains extreme, necessitating continued caution. In the latter months of the year, September through December, the UV Index stabilizes around 13, still underscoring the risk of skin damage. Visitors and residents alike should take proactive measures, such as wearing sunscreen, protective clothing, and limiting direct sunlight exposure during these high-risk months. Stay vigilant, as the potential for harmful exposure persists year-round.
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 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |
| Breves | 15 | 14 | 16 | 15 | 14 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |