Last updated: July 2, 2025
Understanding the UV Index is crucial for the residents of Jaru, Brazil, where the sun shines brightly throughout the year in a tropical climate. With UV levels peaking at a severe 10 during midday, awareness of these levels can significantly help in preventing sunburn and maintaining long-term skin health. As outdoor activities are popular in this vibrant locale, it's essential to recognize the risks associated with high UV exposure—particularly during the hottest hours. Stay informed and protect your skin while enjoying the beautiful sunshine that Jaru has to offer!
As the sun rises, the UV Index begins its ascent, peaking sharply as the day progresses. At 07:00, the index is a gentle 1, making it safe for morning strolls. By 09:00, it climbs to a moderate 4, indicating that some sun protection may be advisable. The real intensity hits at 12:00 and 13:00, with the index soaring to a maximum of 10, signaling a high risk for harm from unprotected sun exposure. As the afternoon fades, the index gradually descends, dipping to 5 by 15:00, then to 2 by 16:00. Finally, as evening approaches, the UV Index drops to 0 after 18:00, signaling the end of the day's sun exposure. Always remember to take precautions during those peak hours!
| 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 | 10 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 5 | 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, the UV Index remains notably high, particularly from January to April, where it consistently reaches 15-16, placing these months in the extreme exposure category with a dangerous burn time of just 10 minutes. As spring transitions into summer, the index slightly decreases in June and July (to 10) but remains in the very high exposure category, requiring 15 minutes of caution before sunburn occurs. By August, the UV Index increases again to 11, marking it as another high-risk month, which continues into September with an index of 13. The year's latter months, October to December, return to an extreme category at 15. Visitors and residents are strongly advised to take protective measures, such as wearing sunscreen, protective clothing, and sunglasses, especially during these high-risk months to reduce the risk of skin damage from UV exposure.
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 |
| Jaru | 15 | 16 | 16 | 15 | 11 | 10 | 10 | 11 | 13 | 15 | 15 | 15 |