Last updated: June 2, 2025
In Lajeado, Brazil, understanding the UV Index is crucial for protecting your skin and maintaining overall health. As residents enjoy the warmth of a Cfa climate, the sun's rays can pose significant risks, especially during peak hours when UV levels reach their maximum at 12 PM with a value of 5. Being aware of these levels helps you take preventive measures against sunburn and long-term skin damage. With the UV Index varying throughout the day, from a mild 1 in the morning to a more concerning 4 and 5 around midday, it’s essential to stay informed and adjust your outdoor activities accordingly for safe sun exposure.
The UV Index throughout the day presents a notable pattern, starting from a maximum of 0 at 07:00, indicating minimal risk. As the morning progresses, 08:00 and 09:00 see a gentle rise to 1, suggesting low exposure. By 10:00, the index ramps up to 3, reflecting moderate sun intensity. The peak arrives at noon, with a UV Index of 5, signifying a higher risk of harm from unprotected sun exposure. Throughout the afternoon, it fluctuates slightly, dropping to 4 by 13:00, and remaining steady until 14:00. The sun's intensity recedes in the late afternoon, falling to 2 at 15:00 and gradually back down to 1 by 17:00. As evening sets in, the UV Index drops to 0 by 18:00, prompting a safe end to sun exposure. Overall, this data underscores the importance of sun safety measures during the peak midday hours.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 1 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 4 | moderate | 30 min |
| 12:00 | 5 | moderate | 30 min |
| 13:00 | 4 | moderate | 30 min |
| 14:00 | 4 | moderate | 30 min |
| 15:00 | 2 | low | 45 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, UV Index values exhibit significant seasonal fluctuations, with particularly high-risk months from January to March and October to December, where the UV Index reaches extreme levels (13-14) and burn times are as short as 10 minutes. The month of April sees a decline to a very high category (UV Index 9) with a burn time of 15 minutes, while May and August present high risk (UV Index 6-7) but with longer burn times of 25 minutes. From June to July, the UV Index reduces to moderate levels (5), allowing for safer sun exposure of 30 minutes. Visitors and residents are strongly advised to take precautions during the extreme and very high risk months, including wearing sunscreen, seeking shade, and wearing protective clothing to minimize the risk of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lajeado | 14 | 13 | 12 | 9 | 6 | 5 | 5 | 7 | 9 | 12 | 13 | 14 |
| 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 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |