Last updated: June 2, 2025
Staying informed about the UV Index in Portelandia, Brazil is crucial for safeguarding your skin's health and preventing painful sunburns. Understanding UV levels helps you make informed decisions about sun exposure, especially during peak hours when the risk of skin damage is highest. With a tropical climate typical of the Aw zone, Portelandia experiences significant UV exposure, particularly around midday when indices soar to 8. By keeping an eye on the UV Index, you can enjoy the beautiful Brazilian sun while prioritizing your well-being.
The UV Index starts off low at 1 early in the morning, peaking around 12:00 PM with a significant rise to 8. The intensity is particularly high from 11:00 AM to 1:00 PM, making this the most critical time for sun exposure. After reaching its zenith at 8, the index begins to decline rapidly, dropping to 4 by 3:00 PM, and continues to taper off to 1 by 5:00 PM. By the evening, UV levels fall to 0, indicating a safe time for twilight activities. Remember to protect your skin during the peak hours, especially when the sun is at its strongest!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | 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, 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 |