Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Morrinhos, Brazil, where sun exposure can pose significant risks to skin health. By being aware of UV levels throughout the day, individuals can effectively prevent sunburn and reduce the long-term effects of UV radiation, such as skin cancer. Morrinhos, with its Aw climate, experiences high UV readings—peaking at an 8 around midday—making it essential to take protective measures during the most intense hours. Embrace the sun wisely by staying informed about the UV Index and prioritizing your skin's safety!
At dawn, the UV Index remains low, peaking at 1 by 08:00. As the sun rises higher, a notable increase occurs, reaching 3 at 09:00 and escalating dramatically to a maximum of 8 from 12:00 to 13:00. This midday surge indicates a higher risk for sun exposure, making it essential to take precautions such as wearing sunscreen and protective clothing. The intensity then gradually declines, dropping to 4 by 15:00, and continuing its descent to 0 by 19:00, marking the end of the sun’s peak influence for the day. Stay mindful of these hourly fluctuations to enjoy the sun safely!
| 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 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 6 | 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 |
The UV Index exhibits significant seasonal variations, remaining high throughout the year, with particularly extreme levels from January to April and again in August to November. The UV Index peaks at 16 in the winter months of January, February, and December, indicating an extreme risk level with a burn time of just 10 minutes. As the year progresses, the risk remains notably high during March, April, and later in the fall with October and November, all classified under the extreme category. May, June, and July show a slight decrease, with UV ratings in the very high category, allowing for a slightly longer burn time of 15 minutes. Visitors and residents are strongly advised to take protective measures year-round, particularly from January to April and August to November, which are identified as high-risk months for UV exposure. Always wear sunscreen, protective clothing, and sunglasses, and seek shade during peak sunlight hours to prevent 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 |
| Morrinhos | 16 | 16 | 14 | 12 | 10 | 8 | 9 | 11 | 12 | 14 | 15 | 16 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |