Last updated: June 2, 2025
Understanding the UV Index is essential for residents and visitors of Pirapora, Brazil, where the warm Aw climate brings plenty of sunshine throughout the year. With UV levels peaking during midday hours, being aware of these readings is crucial for preventing sunburn and protecting skin health. High UV exposure, especially between 10:00 AM and 2:00 PM when indices reach up to 8, emphasizes the need for proper sun safety measures. By staying informed about the UV Index, you can enjoy the beautiful outdoors while minimizing the risks associated with harmful UV radiation.
As the sun rises, the UV Index begins its ascent, starting at a gentle 1 by 7:00 AM. By 8:00 AM, it nudges up to 2, signaling a mild increase in UV exposure. The intensity heats up quickly, reaching a moderate 4 by 9:00 AM, before hitting its peak of 8 from 11:00 AM to 12:00 PM. This is the prime time for sun safety awareness! After noon, the UV Index gradually declines; by 3:00 PM, it recedes to 3, and as the day wanes, it drops significantly to 1 by 4:00 PM. By evening, UV levels have diminished, reaching 0 by 6:00 PM, offering a reprieve from the sun’s rays.
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 | 8 | 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 | 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 demonstrates significant seasonal fluctuations, with extremely high levels persisting from January through April, where the index peaks at 16 and the burn time is just 10 minutes. Following this peak, there’s a slight dip in May and June, with a very high index of 10 and 8, allowing for longer exposure times of 15 minutes. However, as summer transitions into fall, the UV Index rises again in August (11) and remains high through October (15), before returning to extreme levels in November and December. Visitors and residents should exercise caution during the high-risk months of January through April and August through October, ensuring they limit sun exposure and use protective measures such as sunscreen, hats, and sunglasses, especially during peak hours.
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 |
Pirapora | 16 | 15 | 14 | 13 | 10 | 8 | 9 | 11 | 12 | 15 | 15 | 16 |
Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |