Last updated: July 2, 2025
Understanding the UV Index in Iaciara, Brazil is crucial for protecting your skin from harmful ultraviolet radiation. With the region's tropical climate, the sun's intensity can peak dramatically, especially between 11:00 AM and 1:00 PM, when the UV Index can reach as high as 10—indicating a very high risk of harm from unprotected sun exposure. Staying informed about UV levels is essential not only for preventing painful sunburns but also for maintaining long-term skin health. As you enjoy the beautiful Brazilian landscape, be mindful of these risks and take proactive steps to safeguard your skin from the sun's powerful rays.
The hourly UV Index reveals a dynamic range of sun exposure today. Starting off at a gentle 1 at 7:00 AM, the index steadily climbs, peaking at a striking 10 by 12:00 PM—the peak exposure time. As the sun reaches its zenith, caution is advised for outdoor activities during the 11:00 AM to 1:00 PM window when the index remains high at 9 and 10. Following this midday surge, the index gracefully descends; by 3:00 PM, it dips to 4 and continues to decline to 1 by 5:00 PM. Finally, after a brief respite, the UV rays fade to 0 by 6:00 PM, signaling a safe return for evening outdoor plans. Stay sun-smart and enjoy the day wisely!
| 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 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 4 | 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 exhibit seasonal changes, with the highest readings occurring in the winter months and showing only a slight decline during the summer. Notably, January, February, and December experience extreme UV exposure, peaking at an index of 16, which corresponds to a rapid burn time of just 10 minutes. The high-risk months for UV exposure are from October to March, where UV indices reach 15 or 16, demanding vigilant sun safety measures. In contrast, from June to August, the UV Index averages in the very high to extreme categories, with a slightly longer burn time of 15 minutes in June and July. Residents and visitors are advised to take precautions, including wearing protective clothing, seeking shade, and applying sunscreen regularly during these months to mitigate the harmful effects of UV radiation.
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 |
| Iaciara | 16 | 15 | 15 | 13 | 11 | 9 | 10 | 12 | 13 | 15 | 15 | 16 |