Last updated: May 3, 2025
Understanding the UV Index is vital for residents and visitors of Terra Nova, Brazil, where sun exposure can significantly impact skin health. The UV Index serves as a real-time guide to sun intensity, helping you prevent sunburn and reduce the long-term risks of skin damage. With Terra Nova's Aw climate, characterized by warm temperatures and ample sunlight, awareness of UV levels is essential. During peak hours, particularly between 10 AM and 1 PM, the UV Index can escalate to 11, indicating extreme levels of solar radiation. Staying informed empowers you to take necessary precautions, ensuring safe and enjoyable outdoor activities in this vibrant region.
As the sun rises, the UV Index climbs steadily, starting at a gentle 1 at 7:00 AM. By 8:00 AM, it reaches 3, marking the beginning of increased sun exposure. The day continues to heat up, with the index peaking at a remarkable 11 from 11:00 AM to 12:00 PM, indicating a high risk for harm from unprotected sun exposure. As the afternoon sets in, it gradually declines, dropping to 6 by 2:00 PM and subsequently to 3 by 3:00 PM. As the sun begins to descend, the index returns to a safer 1 by 4:00 PM and tapers off to 0 after 6:00 PM. This hourly trend underscores the importance of sun protection during the midday hours when the UV exposure is at its highest.
| 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 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 9 | 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 seasonal UV changes in our region indicate consistently high levels of ultraviolet radiation. From January to April, the UV Index remains at an extreme level of 15-14 with a burn time of just 10 minutes, signaling that outdoor activities require conscious sun protection. As we move into May and June, the UV Index decreases slightly to 11 and 9 respectively, categorized as very high, yet the burn time extends to 15 minutes, indicating a small relief. However, July and August see a return to extreme levels, with UVs peaking at 12 in August and again a burn time of just 10 minutes. The autumn months of September and October also maintain elevated UV levels, reinforcing the need for protective measures, especially in October when the UV reaches back to an extreme level of 15. As we approach November and December, the extreme risk persists. It's crucial for both visitors and residents to take precautions year-round, such as wearing sunscreen, protective clothing, and limiting sun exposure during peak hours, especially in high-risk months of January through April and from August to October.
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 |
| Terra Nova | 15 | 15 | 15 | 14 | 11 | 9 | 10 | 12 | 13 | 15 | 15 | 15 |