Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Lagoa Santa, Brazil, as it serves as a clear indicator of the sun's intensity and potential risks to skin health. With peak UV levels reaching 7 around noon, awareness of these fluctuations is essential for preventing sunburn and protecting overall skin health. The Cwa climate of Lagoa Santa, characterized by its warm and sunny days, can lead to significant UV exposure, particularly during the summer months. By staying informed about the UV Index, you can better enjoy the outdoors while minimizing health risks associated with sun exposure.
The UV Index today began its ascent at 7:00 AM with a modest 1, slowly climbing to 2 by 8:00 AM. As the sun rose higher, the index reached 3 at 9:00 AM, then jumped to 5 by 10:00 AM. The peak was recorded at 11:00 AM and 12:00 PM, both hitting a notable 7. By 1:00 PM, the UV Index slightly dipped to 6, followed by a gradual decline to 5 by 2:00 PM. This downward trend continued as it fell to 3 at 3:00 PM and further decreased to 1 by 4:00 PM. The day wrapped up with very low readings of 1 at 5:00 PM, and dropping to 0 by 6:00 PM, indicating a safe evening with minimal UV exposure. Make the most of the sun wisely! ☀️
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | 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 | 6 | 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 seasonal UV index in our region shows significant variations throughout the year, with extreme levels dominating from January through April, where the UV index reaches a peak of 17 in January. The high-risk months for UV exposure are January through April and again in September to November, where the UV index remains at 10 or higher, indicating an exposure category classified as extreme. Visitors and residents are strongly advised to take precautions during these periods, such as wearing sunscreen, protective clothing, and seeking shade to minimize the risk of sunburn, especially when outdoor activities are planned. In the summer months of June to August, while the UV index decreases to 7 to 10, it is still categorized as high to very high, and individuals should remain vigilant.
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 |
| Lagoa Santa | 17 | 16 | 14 | 12 | 9 | 7 | 8 | 10 | 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 |