Last updated: August 1, 2025
Understanding the UV Index in Caucaia, Brazil is essential for protecting your skin and overall health in this vibrant coastal city. With high UV levels peaking during mid-day, especially in the blistering tropical climate, awareness of these levels can significantly aid in sunburn prevention and help maintain long-term skin health. As you enjoy the sun-soaked beaches and outdoor activities, knowing how to interpret the UV Index helps you make informed decisions about sun safety, ensuring a safe and enjoyable experience while minimizing the risks associated with harmful UV exposure. Stay informed, and make the most of your time in beautiful Caucaia!
The UV Index throughout the day showcases a dynamic pattern of sunlight intensity. Early risers will notice a gentle start at 07:00 with a UV Index of 1, gradually rising to 3 by 08:00. As the sun climbs higher, the index peaks at an intense 11 between 11:00 and 12:00, indicating the need for sun protection during those hours. Following this, the index begins to taper off, dropping back to 9 at 13:00, then descending to 6 at 14:00. By the afternoon, it continues to decline, reaching 4 at 15:00, and finally falling to 1 by 17:00 before the sun sets at 18:00, with a UV index of 0 indicating a safe evening. Be sure to safeguard your skin during the peak hours to enjoy the sunny day safely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | 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 | 4 | 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 consistently high, with extreme exposure levels particularly prominent from January to April, where values peak at 14 to 15. March marks the highest index at 15, indicating significant risk for skin damage from prolonged sun exposure, which has a burn time of only 10 minutes. Although the index slightly decreases during the summer months of June and July (hovering around 11-12), the risk remains considerable. Visitors and residents are strongly advised to take protective measures—such as wearing sunscreen, hats, and sunglasses—especially during these high-risk months to prevent sunburn and long-term skin damage. Consistent protection is necessary year-round, as even in November and December, the UV Index remains at 13.
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 |
| Caucaia | 14 | 14 | 15 | 14 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |