Last updated: July 2, 2025
Understanding the UV Index in Campos Altos, Brazil is crucial for promoting skin health and preventing sunburn, especially in a region where the climate is classified as Cwa (temperate with wet summers). With peak UV levels reaching a significant 9 during midday, this small town experiences heightened risks of UV exposure that can lead to serious skin damage. By being aware of UV Index readings, residents and visitors can take the necessary precautions to protect themselves from harmful rays, ensuring enjoyable time outdoors while safeguarding their skin's health. Whether you're working in your garden or enjoying a sunny day at the park, knowing the UV levels is essential for your safety in Campos Altos.
The UV Index for the day starts off low, with a maximum of 1 at 07:00 and 08:00, providing a gentle introduction to sunlight. As the morning progresses, it climbs gradually, peaking at 9 around 12:00, marking the sun's fierce midday intensity. The index remains high at 8 from 11:00 to 13:00, urging outdoor enthusiasts to seek shade and apply sunscreen. However, by the afternoon, the UV Index begins to taper off, declining to 4 at 15:00 and dropping further to 1 by 17:00, before finally hitting 0 in the evening. This fluctuation highlights the importance of being sun-smart, especially during those critical midday hours when UV exposure can be most damaging.
| 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 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 6 | 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 radiation levels exhibit significant seasonal changes, with the most extreme conditions occurring from January to April and during October to December. The highest risk months are January, February, and December, with UV Index readings peaking at 16. During these months, the burn time is notably short at just 10 minutes, indicating a critical need for sun protection. From May to July, while still high, the UV Index drops to 9, allowing for a slightly increased burn time of 15 minutes. Visitors and residents should remain vigilant during all months, particularly from October to April, and take necessary precautions such as wearing sunscreen, protective clothing, and sunglasses to minimize the risk of UV exposure. Regular skin checks and limiting time in direct sunlight during peak hours are strongly advised.
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 |
| Campos Altos | 16 | 16 | 14 | 12 | 9 | 8 | 9 | 11 | 13 | 15 | 15 | 17 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |