Last updated: June 2, 2025
In Alpinopolis, Brazil, understanding the UV Index is crucial for maintaining skin health and preventing sunburns. With a Cwa climate characterized by distinct seasons, residents and visitors alike may not realize the potential risks posed by sunlight exposure, especially during peak hours when the UV Index can reach as high as 7. This highlights the need for increased awareness and protective measures; knowledge of UV levels can empower you to enjoy the sun safely while safeguarding your skin from harmful UV radiation. Whether you’re basking in the sun or engaging in outdoor activities, staying informed about the daily UV Index helps you make safer choices throughout the year.
As the sun rises, the UV Index remains low at 1 from 07:00 to 08:00, offering a gentle start to the day. However, as the hours progress, the intensity increases, reaching 3 by 09:00 and peaking at 7 between 11:00 and 13:00. This midday surge signifies the sun's powerful rays, urging everyone to take precautions for skin protection. As the afternoon wanes, the UV Index begins to decline, dropping to 5 at 14:00, and further decreasing to 3 by 15:00. The evening brings relief, with the index falling to 1 by 16:00 and 0 from 18:00 onward. Embrace the early hours for outdoor activities, but stay vigilant during lunchtime 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 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 5 | moderate | 30 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 UV Index exhibits significant seasonal variability, with high-risk months occurring from January through April and in August, September, and October, where the index frequently reaches extreme levels. During these months, the UV Index ranges from 12 to 16, with a minimal burn time of just 10 minutes for unprotected skin. Notably, while May presents a slightly reduced risk with a UV Index of 9 (burn time of 15 minutes), conditions ramp back up in July with a very high index of 8. As summer transitions into fall, the UV levels return to extreme readings. Residents and visitors are advised to take protective measures during these peak times, such as wearing sunscreen, protective clothing, and seeking shade, especially during midday hours to mitigate risks associated with excessive UV exposure.
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 |
| Alpinopolis | 16 | 16 | 14 | 12 | 9 | 7 | 8 | 11 | 12 | 14 | 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 |