Last updated: June 2, 2025
In Belford Roxo, Brazil, awareness of the UV Index is crucial for maintaining skin health and preventing sunburn, especially in a climate characterized by warm temperatures and ample sunlight. Understanding UV levels helps residents and visitors alike to make informed decisions about sun protection, ensuring that outdoor activities are enjoyable without compromising skin safety. Typically, the UV Index in Belford Roxo peaks around midday, with levels reaching 6, indicating a higher risk of harm from unprotected sun exposure. Stay informed and shield yourself from those midday rays!
The UV Index starts low in the early morning, with a maximum of 1 at 07:00 and 08:00, making it a safe time for outdoor activities. As the day progresses, the intensity rises sharply, peaking at 6 between 11:00 and 12:00—the perfect time to take precautions if heading outside. By 13:00, it dips slightly to 5, and a more noticeable decline occurs in the afternoon, falling to 2 by 15:00. As the sun sets, the UV Index drops off sharply, reaching 1 by 16:00, and finally 0 past 18:00. It’s clear that midday sun calls for some sun safety measures, but the later hours provide a much more forgiving environment for enjoying the outdoors!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 5 | 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 |
The UV Index reveals significant seasonal variations in sun exposure risk throughout the year. January, February, and March experience extreme UV levels, with a high index of 15, 14, and 12, respectively, requiring minimal exposure of just 10 minutes before the risk of burning increases. As spring transitions into summer, April sees a decline to very high at 10, allowing for slightly longer exposure of 15 minutes. During May, June, and July, the index shifts to high, with longer burn times of 25 minutes. However, in August, it returns to very high at 9, prompting caution for 15 minutes of exposure. The fall months of September, October, and November see a resurgence in extreme levels (UV Index of 11, 12, and 13), demanding protective measures within 10 minutes of sun exposure. Finally, December revisits the peak at 15, maintaining the cycle of extreme risk. Visitors and residents should prioritize sun safety during these high-risk months, particularly from January to March and again in September to November, by using sunscreen, wearing protective clothing, and seeking shade to minimize the risk of UV-induced skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Belford Roxo | 15 | 14 | 12 | 10 | 7 | 6 | 7 | 9 | 11 | 12 | 13 | 15 |
| 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 |