Last updated: July 2, 2025
In Itaguacu, Brazil, understanding the UV Index is crucial for safeguarding your skin health. With the city's Aw climate characterized by warm temperatures, residents and visitors face varying UV exposure risks throughout the day. Awareness of UV levels is essential for preventing sunburn and long-term skin damage. During peak hours, from 11:00 AM to 1:00 PM, the UV Index can reach as high as 8, indicating a very high risk of harm from unprotected sun exposure. Staying informed allows you to take necessary precautions and enjoy the sunny days in Itaguacu while keeping your skin safe.
As the sun rises, the UV Index begins its ascent, starting at a gentle 1 by 7:00 AM. By 8:00 AM, it nudges up to 2, signaling a mild increase in UV exposure. The intensity heats up quickly, reaching a moderate 4 by 9:00 AM, before hitting its peak of 8 from 11:00 AM to 12:00 PM. This is the prime time for sun safety awareness! After noon, the UV Index gradually declines; by 3:00 PM, it recedes to 3, and as the day wanes, it drops significantly to 1 by 4:00 PM. By evening, UV levels have diminished, reaching 0 by 6:00 PM, offering a reprieve from the sun’s rays.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 7 | 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 UV Index experiences significant fluctuations throughout the year, with the highest levels recorded between January and April, where the index consistently reaches a severe 15 and falls into the "extreme" exposure category, demanding caution for outdoor activities as minimal sun exposure can result in burns in just 10 minutes. As the year progresses into May and June, the index reduces to 9 and 7, respectively, transitioning to "very high" and "high" levels, which still require mindful sun protection with burn times extending to 15 and 25 minutes. However, the risk escalates again in the months of September and October with indices of 12 and 13, reverting to an "extreme" exposure category. Throughout the winter months, November and December also maintain a hazardous UV Index of 15. Given these conditions, it is advised that both visitors and residents practice diligent sun safety measures—applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade during peak hours, especially from January to April and September to December to minimize the risk of sun-related health issues.
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 |
| Itaguacu | 15 | 15 | 14 | 12 | 9 | 7 | 8 | 10 | 12 | 13 | 15 | 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 |