Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors in Nova Olina do Maranhão, Brazil, where the sun's rays can be particularly intense. With peak UV levels regularly soaring to a high of 13 around midday, awareness of these measurements is essential for preventing sunburn and safeguarding skin health. Given the region's tropical climate, exposure risks rise significantly as the sun climbs in the sky, making it vital to take protective measures during peak hours. Stay informed and enjoy the sunshine responsibly!
The UV Index reveals a striking pattern throughout the day, peaking dramatically around noon. Starting from a gentle 1 at 07:00, the index climbs steadily, hitting 3 by 08:00 before surging to 10 at 10:00 and reaching its maximum of 13 at 12:00. This midday high suggests the need for strong sun protection as the intensity begins to wane in the afternoon, dropping to 9 at 14:00 and further declining to a moderate 5 by 15:00. As the sun sets, the UV Index drops sharply to 2 at 16:00 and returns to its morning levels with a 1 at 17:00 and 0 from 18:00 onward. For sun-enthusiasts and safety-conscious individuals alike, the data paints a clear picture: the hours around midday demand the utmost vigilance against UV exposure!
| 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 | 10 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 9 | 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 |
Throughout the year, UV Index levels remain consistently high, indicating an extreme exposure category that calls for caution. January and February start the year with a UV Index of 15 and 14, respectively, before peaking at 16 in March and April. The UV Index gradually decreases in the summer months, reaching 12 in June and descending to 11 in July, but it remains significant. Notably, May to October sees UV levels hovering between 12 and 13, making visitations to outdoor areas risky. Residents and visitors alike should be especially vigilant during these high-risk months, ensuring they limit sun exposure to 10 minutes without sun protection, wear sunscreen, hats, and sunglasses, and seek shade whenever possible to safeguard their skin health.
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 |
| Nova Olina do Marnhao | 15 | 14 | 16 | 16 | 13 | 12 | 11 | 13 | 13 | 13 | 13 | 13 |