Last updated: July 2, 2025
Understanding the UV Index is vital for residents of Martinho Campos, Brazil, as it plays a crucial role in protecting skin health and preventing sunburn. Given the region's warm climate, UV levels can soar, particularly between 10 AM and 2 PM, reaching a maximum index of 9—indicating a high risk of harm from unprotected sun exposure. By staying informed about daily UV levels, you can take proactive measures to safeguard your skin and enjoy the beautiful Brazilian sun safely.
The UV Index today tells a compelling story of sun exposure throughout the day. Starting low at 1 by 07:00, it gradually climbs to a moderate 3 by 09:00. As the day progresses, the intensity peaks impressively at 9 around 12:00, signaling that the sun is at its most powerful. The afternoon remains vibrant but begins to taper off as we see a drop to 4 by 15:00. Post-sunset, the UV Index plummets to 0 between 18:00 and 19:00, indicating a retreat from harmful rays. It’s a day where staying sun-smart is crucial during the midday hours, especially between 10:00 and 14:00.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | 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 | 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 |
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 |
| Martinho Campos | 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 |