Last updated: July 2, 2025
In Porto Real do Colégio, Brazil, awareness of the UV Index is crucial for maintaining healthy skin and preventing sunburn. Understanding UV levels allows residents and visitors alike to make informed decisions about sun exposure, especially in this typically warm tropical climate where UV radiation peaks during midday hours. With UV Index values soaring to 10 between 11:00 AM and 1:00 PM, it's essential to take appropriate precautions to safeguard against skin damage and enhance overall health. Embracing knowledge of UV exposure can lead to healthier skin and a more enjoyable outdoor experience in this beautiful region.
As the sun rises, the UV Index starts low at 1 at 07:00, making it a safe time for early birds. By 08:00, it climbs to 3, indicating a slight increase in UV exposure. The peak arrives sharply at 11:00 and 12:00, hitting a maximum of 10—a strong reminder to wear sunscreen and seek shade. Following this, the index gradually decreases, dipping to 6 by 14:00 and dropping further to 3 by 15:00. As the day winds down, UV levels return to a comfortable 1 by 16:00, fading to 0 by 18:00. This hourly pattern emphasizes the importance of midday protection while reminding us of the sun's dynamic presence throughout the day.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 10 | 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 |
The UV Index exhibits extreme levels from January to April, peaking at 14, indicating an urgent need for protective measures with a burn time of just 10 minutes. May sees a slight decrease to 12, still categorized as extreme, before transitioning to very high levels of 10 in June and July, allowing for a marginally longer burn time of 15 minutes. As summer fades, August ramps back up to an extreme index of 12, while September and October feature UV levels of 13 and 14, respectively, with burn times once again dropping to 10 minutes. November reaches a peak UV Index of 15, cautioning all residents and visitors to remain vigilant. Advisable precautions include wearing sunscreen, protective clothing, and sunglasses, especially during the highest risk months of January through April and again in November. During these periods, limit sun exposure, particularly during midday hours, to minimize the risk of 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 |
| Porto Real do Colegio | 14 | 14 | 14 | 14 | 12 | 10 | 10 | 12 | 13 | 14 | 15 | 14 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |