Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of Guanhaes, Brazil, where the sunny climate can lead to high levels of ultraviolet radiation. With peak UV levels reaching 9 around noon, the risk of sunburn and long-term skin damage increases significantly if proper precautions aren't taken. By staying informed about daily UV exposure risks, you can protect your skin health and enjoy the beautiful outdoors safely. Given Guanhaes' tropical climate, be vigilant, especially during the hotter months, to ensure you safeguard yourself against the sun’s harmful effects.
The UV Index data for today reveals a steady climb in ultraviolet exposure as the sun rises. Starting at a mild 1 at 07:00, the index escalates to 2 by 08:00, before witnessing a significant jump to 4 at 09:00. The peak occurs around 12:00, where it reaches 9—a strong signal to take protective measures against sun damage. After this midday high, the UV Index begins to drop, descending to 6 at 14:00, before dwindling further to 3 by 15:00. The evening hours bring a dramatic decline, with 1 at 16:00 and tapering off to 0 by 19:00. This data highlights the importance of sun safety during peak hours, particularly between 11:00 and 13:00.
| 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 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 1 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index data reveals significant seasonal changes, with the highest levels of UV exposure occurring from January to April, where the index consistently reaches between 16 to 17 and is categorized as extreme. During these months, individuals have a burn time of just 10 minutes, indicating a critical need for sun protection. May through July sees a slight decrease in UV levels (index of 8 to 9), categorized as very high, allowing for a slightly longer burn time of 15 minutes. However, caution is still advisable. As summer transitions to fall, the UV Index spikes again in August, September, and October, rendering these months again extreme, urging residents and visitors to remain vigilant with sun safety measures. November and December witness a return to extreme levels, prompting a sustained need for protective actions. It’s crucial for everyone to be aware, especially during high-risk months from January to April and again in August and October, to minimize the risk of UV exposure through adequate skin protection, appropriate clothing, and seeking shade when necessary.
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 |
| Guanhaes | 17 | 16 | 14 | 12 | 9 | 8 | 9 | 11 | 12 | 14 | 15 | 16 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |