Last updated: May 3, 2025
Understanding the UV Index is crucial in Campos do Jordão, Brazil, where moderate to high UV levels can pose serious risks to skin health. The UV index provides a clear, easy-to-read measure of ultraviolet radiation from the sun, helping residents and visitors alike to make informed choices about sun exposure. With the area's Cfb climate, characterized by moderate temperatures, it's essential to be mindful of peak UV periods, especially between 10:00 AM and 2:00 PM when readings reach as high as 8. Being aware of these levels not only aids in preventing painful sunburn but also promotes long-term skin health—essential for enjoying the beautiful outdoors of this picturesque mountain town.
As the sun rises, the UV Index begins its ascent, starting at a gentle 1 by 7:00 AM. By 8:00 AM, it nudges up to 2, signaling a mild increase in UV exposure. The intensity heats up quickly, reaching a moderate 4 by 9:00 AM, before hitting its peak of 8 from 11:00 AM to 12:00 PM. This is the prime time for sun safety awareness! After noon, the UV Index gradually declines; by 3:00 PM, it recedes to 3, and as the day wanes, it drops significantly to 1 by 4:00 PM. By evening, UV levels have diminished, reaching 0 by 6:00 PM, offering a reprieve from the sun’s rays.
| 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 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 8 | very high | 15 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 |
Throughout the year, the UV Index demonstrates significant seasonal variability, with extremely high levels persisting in the winter months. January and February both feature a UV Index of 16, categorized as extreme, where the potential for skin damage from sun exposure occurs in as little as 10 minutes. As spring approaches, March and April maintain similarly high levels, with UV indices of 13 and 12, respectively. May marks a slight reduction to a very high exposure category (UV Index 8) with an increased burn time of 15 minutes, transitioning into June where it further drops to a high category (UV Index 6) allowing for a 25-minute burn time. The summer months of July and August return to very high levels, prompting caution with 15 minutes of safe exposure. As fall sets in, September and October see a rise back to extreme levels (UV Index of 12 and 14), requiring reduced exposure time of 10 minutes once more. Finally, November and December wrap up the year with UV indices of 15 and 16, respectively, reiterating the necessity of precaution. Visitors and residents should take proactive measures during these high-risk months by applying sunscreen frequently, wearing protective clothing, and seeking shade, especially during peak sun hours.
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 |
| Campos do Jordao | 16 | 16 | 13 | 12 | 8 | 6 | 8 | 10 | 12 | 14 | 15 | 16 |
| 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 |