Last updated: August 1, 2025
Understanding the UV Index in Santo Augusto, Brazil is crucial for promoting skin health and preventing sunburn. With the region's Cfa climate zone and its unique weather patterns, awareness of UV levels helps residents and visitors alike take proactive measures against the sun's harmful rays. Typically, Santo Augusto experiences varying UV exposure throughout the day, peaking at a moderate level of 6 around 1 PM. By being informed about daily UV fluctuations, you can better protect your skin and enjoy the sun safely!
The UV Index for today paints a clear picture of sun exposure throughout the day. Starting from a low of 0 at 07:00, the intensity gradually rises, reaching a moderate 6 at 13:00, marking the peak of midday sun. As the clock ticks down from 14:00, the UV Index begins to decline, dropping to 5 and later tapering off to 1 by 17:00. Finally, by 18:00, the UV Index falls back to a safe 0, indicating it's time to seek shelter from the sun. If you're planning outdoor activities, ensure to wear protective gear during the peak hours between 11:00 and 14:00 for optimal safety.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal variation, with the highest levels recorded during the winter months. January, February, and March all see an extreme UV Index of 15, 14, and 13, respectively, with a rapid burn time of just 10 minutes. As spring approaches, April sees a drop to a very high index of 10 with a burn time of 15 minutes. The summer months – May through August – present a more moderate UV Index, ranging from 6 to 7 and allowing for longer exposure times of 25 to 30 minutes. However, September transitions back to a very high index of 10, and the cycle restarts with extreme levels in October and November before ending the year with another peak in December. Given this data, it is crucial for both visitors and residents to take precautions during high-risk months, especially in winter and late fall, recommending the use of sunscreen, protective clothing, and limiting sun exposure during peak hours to safeguard against skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Santo Augusto | 15 | 14 | 13 | 10 | 6 | 5 | 6 | 7 | 10 | 13 | 14 | 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 |