Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Humaita, Brazil, where the sun shines bright against the backdrop of its tropical Am climate. Being aware of the UV levels throughout the day can help you take essential precautions against sunburn and long-term skin damage. With peak UV Index values reaching 11 at midday, it's important to recognize the increased risk of harmful exposure during those hours. By staying informed, you can protect your skin and enjoy the beautiful, sunny days that Humaita has to offer!
As the day unfolds, the UV Index reaches its peak between 11:00 AM and 12:00 PM, soaring to a striking 11. The morning starts gently, with the index at a modest 1 by 7:00 AM, slowly climbing to 4 by 9:00 AM. The sun then intensifies, pushing the index to a strong 10 at 11:00 AM, signaling it's time to seek shade and protect your skin. By 2:00 PM, it begins to wane, dropping to 8, and further decreases to 5 by 3:00 PM. As the afternoon progresses, the index continues to fall, reaching 2 at 4:00 PM, and finally settling at 1 by 5:00 PM and 0 as the sun sets at 6:00 PM. Stay aware and shield yourself during those crucial midday 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 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index exhibits notably high levels across the year, particularly from January to April, where it remains in the extreme category (15-16) with an alarming burn time of just 10 minutes. May and June see a slight decrease, but values remain extreme at 12 and 11, respectively. July and August shift to a very high category at 10, allowing for a slightly longer burn time of 15 minutes. As the year progresses to September through November, the UV levels increase again, returning to extreme levels, while October and November peak at 14 and 15. December mirrors this trend with a UV Index of 14. Therefore, visitors and residents should exercise extreme caution during these high-risk months, particularly from January to April and again in October and November. It's crucial to prioritize sun protection measures, such as wearing sunscreen, protective clothing, and seeking shade, particularly during peak exposure times.
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 |
| Humaita | 15 | 16 | 16 | 15 | 12 | 11 | 10 | 10 | 12 | 14 | 15 | 14 |