Last updated: July 2, 2025
Understanding the UV Index is essential for residents and visitors of Portelandia, Brazil, a region known for its tropical climate and high levels of sun exposure. With UV levels peaking at 9 between noon and 1 PM, recognizing the potential for skin damage is crucial for sunburn prevention and overall skin health. As you navigate the warm, sunny days typical of Portelandia, staying informed about UV risks empowers you to take proactive measures to protect your skin and enjoy the beautiful outdoor environment safely.
The UV Index throughout the day offers a dynamic view of sun exposure. Starting with a gentle UV Index of 1 at 07:00 and 08:00, it gradually ascends to a moderate 3 by 09:00. The intensity peaks dramatically at 12:00 and 13:00, reaching a high of 9, indicating a strong need for sun protection. As afternoon rolls in, the index tapers down to 5 by 15:00 and further declines to 3 at 16:00. Finally, the evening brings relief with values dropping to 1 by 17:00 and fading to 0 after sunset at 19:00. This data highlights the importance of midday sun safety with the highest UV levels occurring in the early afternoon.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV index levels exhibit significant seasonal variation, with particularly high-risk months occurring during the winter and late fall. From January to April, the UV Index remains in the extreme category, peaking at 17 in February, where the burn time is critically short at just 10 minutes. As the year progresses into May and June, the UV Index slightly decreases to 10 and 8, yet still falls into the very high category, allowing for 15 minutes of exposure before burning occurs. The trend continues into July and August, where levels rise again to 9 and 11, respectively. As autumn approaches, September and October experience elevated UV indices back at 12 and 15 with burn times of 10 minutes. With such pronounced UV levels, it’s essential for residents and visitors alike to take precautions during these months: wear protective clothing, apply sunscreen regularly, and seek shade during peak hours to mitigate the risks of overexposure. Staying aware of the UV Index can help ensure a safer 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 |
| Portelandia | 16 | 17 | 14 | 12 | 10 | 8 | 9 | 11 | 12 | 15 | 15 | 16 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |