Last updated: June 2, 2025
Understanding the UV Index is essential for residents and visitors in Baixa Grande, Brazil, where the tropical climate brings intense sun exposure year-round. Monitoring UV levels can help prevent sunburn and protect skin health, especially during peak hours when the index reaches its maximum of 10 from 12:00 PM to 1:00 PM. With the UV Index soaring rapidly from the morning hours, reaching values of 9 by 11:00 AM, it's crucial to stay informed about the risks associated with sun exposure in this region. By being aware of the daily UV forecast, you can take proactive measures to safeguard your skin and enjoy the sunny days in Baixa Grande safely.
The UV Index data reveals a fascinating daily cycle of sun exposure. Starting at 07:00, the index is a comfortable 1, perfect for early risers. As the sun climbs higher, it reaches 3 by 08:00, gradually increasing to a peak of 10 at 12:00, indicating a high risk of harm from unprotected sun exposure. After this zenith, the index starts to decline, dropping to 8 by 13:00, 6 at 14:00, and then into safer territory, settling at 3 by 15:00. The late afternoon brings a gentle decrease, with values falling back to 1 by 16:00 and remaining at that level until 17:00. By 18:00, the UV Index is at 0, signaling it's time to enjoy the shade or head indoors, as sunlight's intensity wanes.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 6 | high | 25 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, UV Index levels in this region fluctuate significantly, with the highest values occurring from January to March and again in November and December, where the index reaches 15 and falls within the extreme exposure category, giving a burn time of just 10 minutes. The months of April, August, September, and October also present high risks, showing UV levels between 13 and 14, warranting similar caution. Conversely, June and July see a slight decrease to a UV Index of 10, categorized as very high, offering a marginally longer burn time of 15 minutes. Visitors and residents are strongly advised to take precautionary measures during these high-risk months—wearing protective clothing, using sunscreen, and seeking shade, especially during midday hours, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Baixa Grande | 15 | 14 | 15 | 14 | 11 | 10 | 10 | 12 | 13 | 15 | 15 | 15 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |