Last updated: July 2, 2025
In Esperantinopolis, Brazil, being aware of the UV Index is crucial for safeguarding your skin against the sun's harmful rays. Understanding UV levels is essential not only for preventing painful sunburns but also for maintaining long-term skin health. With a tropical climate that often sees UV values soaring as high as 11, exposure risks can significantly increase during peak hours, especially from 10 AM to 2 PM. By staying informed about the daily UV Index, residents and visitors can take proactive measures to enjoy the sunny days while minimizing the risk of skin damage.
The UV Index begins its ascent at 07:00 with a low reading of 1, gradually rising to 2 by 08:00. As the day progresses, the intensity of UV radiation peaks at 12:00, hitting a maximum of 11—a critical level where sun protection is essential. Following this zenith, the index starts to decline, measuring 10 at 13:00, then tapering off to 8 by 14:00. By mid-afternoon, the UV Index drops to 5 at 15:00 and continues its downward trajectory, reaching 2 at 16:00. As the sun sets, the UV index decreases to 1 by 17:00 and ultimately settles at 0 by 18:00, signifying the end of significant UV exposure for the day. It's a reminder that while the sun's rays can be intense at midday, the morning and late afternoon offer safer conditions for outdoor activities.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | 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 Index levels remain consistently high, categorized as extreme, with burn times often limited to just 10 minutes. The high-risk months for UV exposure extend from January to April, where the UV Index reaches its peak at 16 in March. Although UV levels start to decline slightly in the summer months of June and July, they remain within the extreme category, making sun safety essential. Visitors and residents are advised to take precautions year-round, such as wearing protective clothing, using sunscreen with high SPF, and seeking shade when necessary, especially during the peak hours of sunlight. Remember, even on cloudy days, UV rays can still cause skin damage, so vigilance is key.
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 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |
| Esperantinopolis | 15 | 15 | 16 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 14 | 13 |