Last updated: June 2, 2025
Understanding the UV Index in Caraguatatuba, Brazil is crucial for protecting your skin and overall health. With its tropical Cfa climate, the region experiences varying UV levels throughout the day, making awareness essential for sunburn prevention. For instance, UV levels peak around midday, reaching as high as 6 by noon, which can significantly increase the risk of skin damage. By staying informed about these fluctuations, residents and visitors can take proactive measures to minimize exposure, enjoy the sunny beaches, and keep their skin healthy all year round.
The UV Index starts low in the early morning, with a maximum of 1 at 07:00 and 08:00, making it a safe time for outdoor activities. As the day progresses, the intensity rises sharply, peaking at 6 between 11:00 and 12:00—the perfect time to take precautions if heading outside. By 13:00, it dips slightly to 5, and a more noticeable decline occurs in the afternoon, falling to 2 by 15:00. As the sun sets, the UV Index drops off sharply, reaching 1 by 16:00, and finally 0 past 18:00. It’s clear that midday sun calls for some sun safety measures, but the later hours provide a much more forgiving environment for enjoying the outdoors!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 5 | moderate | 30 min |
| 14:00 | 4 | 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 |
Throughout the year, the UV Index reveals significant seasonal changes in sun exposure risk. The months of January, February, March, April, September, October, November, and December consistently showcase an extreme exposure category with a high UV Index ranging from 12 to 15 and a quick burn time of 10 minutes, marking them as high-risk months for sunburn. Conversely, during May and August, the UV Index lowers to 8 and 9 respectively, though still classified as very high, offering a slightly longer burn time of 15 minutes. In the summer, June and July present a lower UV Index of 6 and 7 classified as high, with a burn time extending to 25 minutes. Visitors and residents alike should exercise caution, especially during extreme months, by seeking shade, wearing protective clothing, and applying sunscreen frequently to minimize health risks.
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 |
| Caraguatatuba | 15 | 15 | 12 | 11 | 8 | 6 | 7 | 9 | 11 | 13 | 14 | 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 |