Last updated: May 3, 2025
Understanding the UV Index is crucial for anyone living in or visiting Santa Teresa, Brazil, where the warm Aw climate brings a mix of sunny days and potential sun exposure risks. With UV levels peaking around mid-day, being aware of these levels is vital for preventing sunburn and safeguarding your skin health. As you explore this beautiful region, keep an eye on the UV Index to make informed choices about sun protection and enjoy every moment under the Brazilian sun!
As the sun rises, the UV Index begins its gentle climb, starting at a modest 1 at 07:00. By 09:00, it reaches 5, indicating a noticeable increase in UV exposure. The peak arrives at 11:00 with a robust 9, signaling the need for sun protection. A slight decline follows as the index dips to 8 at noon and continues to decrease through the afternoon, dropping to 2 by 15:00. By the time the clock strikes 18:00, the index falls to 0, indicating a safe period for outdoor activities without the worry of UV harm. Remember, safeguarding your skin is essential during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | 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 | 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 |
During the year, UV Index levels demonstrate significant seasonal fluctuations, with the highest values occurring from January to March, where the index remains at 15, indicating an extreme risk of harm from unprotected sun exposure. Particularly high-risk months include January, February, March, April, September, October, November, and December, all of which carry an extreme exposure category and a rapid burn time of just 10 minutes. May to August sees a slight decrease, with UV Index values ranging from 7 to 9, categorized as high to very high, with burn times extending to 15 to 25 minutes. Given these conditions, it’s crucial for both visitors and residents to take proactive measures such as wearing sunscreen, protective clothing, and seeking shade, especially during the peak months. Safety is paramount, and reducing sun exposure during the highest index periods is strongly advised.
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 |
| Santa Teresa | 15 | 15 | 13 | 11 | 9 | 7 | 8 | 10 | 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 |