Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Santa Maria da Boa Vista, Brazil, where the BSh climate brings a mix of sunny days and elevated UV exposure risks. With UV levels peaking at a maximum of 12 around noon, recognizing these values can help prevent sunburn and protect skin health. By being aware of the UV Index, you can take necessary precautions—like applying sunscreen or seeking shade—especially during the most intense hours of sunlight. Embrace the sun safely and enjoy all that Santa Maria da Boa Vista has to offer!
As the sun rises at 07:00, the UV Index starts at a mild 1, but things heat up quickly. By 08:00, it reaches 4, and the intensity peaks at 11:00 with an impressive 12. The highest reading occurs at 12:00, maintaining the 12 before gradually declining. From 13:00 to 15:00, the index lowers to 10 and 7, before dropping off to 3 by 15:00. The sun begins to set, with the index falling to 1 by 16:00, and fading to 0 by 19:00. Overall, this progression highlights the importance of sun safety, especially during the peak hours between 10:00 and 14:00, when UV exposure is at its highest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 10 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 7 | 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 varies throughout the year, consistently remaining at extreme levels with values mainly between 11 and 15. Notably, March and November represent the peak months with a UV Index of 15, accompanied by a dangerously short burn time of only 10 minutes. Residents and visitors should exercise vigilance from January through December, as every month presents a high risk for sunburn due to the extreme exposure category. It is crucial to take precautions by wearing appropriate sunscreen, protective clothing, and seeking shade during peak sunlight hours to mitigate the risk of UV-related 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 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |
| Santa Maria da Boa Vista | 14 | 14 | 15 | 14 | 12 | 11 | 11 | 12 | 13 | 14 | 15 | 14 |