Last updated: July 2, 2025
In Almeirim, Brazil, staying informed about the UV Index is crucial for safeguarding your skin and overall health. With the region's tropical climate and intense sun exposure, understanding UV levels can mean the difference between enjoying the outdoors and suffering from painful sunburn. During peak hours, especially between 11:00 AM and 1:00 PM, the UV Index often soars to 11, indicating an extreme risk of harm from unprotected sun exposure. By being aware of these levels, residents and visitors can take proactive measures to protect themselves and enjoy the vibrant beauty of Almeirim safely.
The UV Index reveals a dynamic pattern throughout the day, starting at a low 1 in the early morning hours of 07:00 and 08:00. As the sun rises, the index climbs steadily, reaching 3 by 09:00. The midday sun peaks aggressively at 11, with the UV Index hitting its maximum of 11 from 12:00 to 13:00, signaling a high risk for skin damage without protection. Following this peak, values gradually decline, dropping to 9 at 14:00, and tapering down to 6 by 15:00. As the evening approaches, the UV Index falls back to 3 by 16:00 and finally descends to a 1 by 17:00 and 18:00, before sinking to 0 at 19:00, marking the end of the day's UV exposure. It's a reminder to stay vigilant under the sun, especially during those peak hours!
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 | 6 | 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 |
From January through April, the UV Index remains extremely high, peaking at 16, indicating that the risk of harm from unprotected sun exposure is significant, with a minimal burn time of just 10 minutes. The high-risk months continue into May and June, where the UV Index gradually decreases but still maintains an extreme rating, allowing only a 10-minute safe exposure period. Visitors and residents should remain vigilant, especially during these months, wearing protective clothing, applying sunscreen, and seeking shade when outdoors. As summer transitions into autumn, the UV Index remains high through September and October but begins to gradually lower by November. Regardless of the month, it is crucial for everyone to stay informed and take necessary precautions to protect skin health throughout the year.
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 |
Almeirim | 15 | 15 | 16 | 16 | 13 | 12 | 11 | 12 | 13 | 13 | 14 | 13 |