Last updated: August 1, 2025
Understanding the UV Index in Pirajui, Brazil is crucial for protecting your skin and overall health. As a region characterized by a warm, tropical climate, Pirajui experiences varying levels of UV exposure throughout the day, peaking at a noteworthy 7 between 12:00 PM and 1:00 PM. By being aware of these UV levels, you can effectively prevent sunburn, reduce long-term skin damage, and enjoy outdoor activities safely. From early morning hours of low risk to the intense midday sun, staying informed about the UV Index helps you make informed decisions and safeguard your well-being in this sunny locale.
Throughout the day, the UV Index showcases a dynamic pattern of intensity. Starting at a gentle 1 by 07:00, the index gradually rises, reaching a moderate 2 by 09:00. As the sun climbs higher, a notable increase occurs, peaking at an elevated 7 from 12:00 to 13:00, marking the day's most intense UV exposure. The index then begins its descent, dipping to 4 by 15:00 and further down to 2 by 16:00. As evening approaches, the UV risk diminishes, with values dropping to 0 at 18:00 and remaining low for the rest of the evening. It's essential to stay protected during those peak midday hours when UV exposure can be at its strongest!
| 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 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 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 experiences significant seasonal fluctuations, peaking during the first and last months of the year. From January to April, the index ranges from 15 to 11, categorized as extreme exposure, with a brief burn time of just 10 minutes. May marks a slight decrease to 8, categorized as very high. By June and July, the index stabilizes at 7, indicating high exposure, allowing for a longer burn time of 25 minutes. The summer months transition back to higher risks in August (UV Index 10) and then spike again from September to December, where values rise to 16 in December, also categorized as extreme. Visitors and residents should take necessary precautions, especially during high-risk months: January, February, March, April, September, October, November, and December, as exposure can lead to severe sunburn in as little as 10 minutes. It's crucial to wear protective clothing, apply sunscreen, and seek shade, particularly during peak hours.
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 |
| Pirajui | 15 | 16 | 13 | 11 | 8 | 7 | 7 | 10 | 12 | 13 | 14 | 16 |
| 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 |