Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Varzelandia, Brazil. With its tropical climate, this vibrant region often faces high levels of ultraviolet radiation, especially during peak hours. Being aware of the UV Index helps in preventing sunburn and protecting skin health, as even short exposures can lead to lasting damage. During the day, UV levels can soar as high as 10 at noon, making it essential to take precautions against harmful rays. By staying informed about UV intensity, you can enjoy Varzelandia’s sunny outdoor activities while keeping your skin safe and healthy.
As the sun rises, the UV Index begins its climb, starting at a modest 1 at 07:00. By 08:00, it gently increases to 2, signaling a day of strengthening rays. The intensity peaks around 12:00 with a striking 10, indicating the time for caution and sun protection. As midday passes, the index gradually declines, dropping to 6 at 14:00 before continuing its descent to 4 at 15:00. By 17:00, it returns to a safer 1, and eventually fades to 0 after 18:00, marking a gentle close to the day. This data underscores the importance of seeking shade and wearing sunscreen during the midday hours when the UV exposure is at its most intense.
| 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 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 9 | 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 |
Throughout the year, seasonal changes in UV index reveal significant variation, particularly from January to April, where the UV Index remains extremely high, peaking at 16 in January. High-risk months are concentrated from January to April and again in November, where the UV Index consistently measures between 15 and 16, indicating an extreme risk of harm from unprotected sun exposure, with a burn time of just 10 minutes. Visitors and residents should exercise caution during these months by seeking shade, wearing protective clothing, and using sunscreen with a high SPF. As the year progresses into the summer months, the UV Index drops slightly, but June and July still present a very high risk, with a burn time of 15 minutes. It is advisable to continue protective measures during these months, especially in late summer and early fall when the index remains elevated in August and September. Being aware of these UV patterns is essential for enjoying a safe outdoor experience year-round.
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 |
| Varzelandia | 16 | 15 | 14 | 13 | 11 | 9 | 10 | 12 | 12 | 14 | 15 | 15 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |