Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors in Guanambi, Brazil, where the tropical climate leads to elevated UV levels, particularly during the midday hours. With peak UV Index values reaching 10 around noon, awareness of these levels is essential for sunburn prevention and promoting long-term skin health. The sun's intensity in Guanambi makes it easy to underestimate the risks associated with sun exposure. By staying informed about the UV Index, you can take proactive steps to protect your skin while enjoying the beautiful Brazilian outdoors.
The UV Index throughout the day presents an interesting narrative of sun exposure. Early risers benefit from a low index of 1 at 07:00, gradually increasing to a modest 2 by 08:00. As the day progresses, the intensity peaks at 12:00, reaching a high of 10, indicating significant sun exposure. Midday sun at 11:00 and 12:00 calls for caution, as the index remains dangerously elevated at 9 and 10. This is followed by a gentle decline, with values dropping to 6 at 14:00 and easing further to 4 by 15:00. As evening approaches, the UV Index diminishes, falling back to a safe 1 by 17:00, before collapsing to 0 after 18:00. Emphasizing the importance of sun safety, it’s crucial to stay protected during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 4 | 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 |
During the year, UV Index values exhibit significant variation, particularly peaking in the winter months with extreme levels in January through May. High-risk months for UV exposure include January through April, where the UV Index consistently reaches 15 or higher, indicating extreme risk and a brief burn time of just 10 minutes. May starts a slight decline with an index of 11, but remains high. From June to July, while the index drops slightly to 9 and 10 respectively, caution is still advised as exposure is classified as very high with a burn time of 15 minutes. As summer transitions into fall, August sees a rise back to an extreme level of 12, followed by a return to highs in September and October. To protect yourself from harmful UV rays, it is crucial for both visitors and residents to practice sun safety measures, such as applying sunscreen frequently, wearing protective clothing, and seeking shade especially during peak hours from January to April and throughout the late summer months.
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 |
| Guanambi | 16 | 15 | 15 | 13 | 11 | 9 | 10 | 12 | 13 | 14 | 15 | 15 |