Last updated: May 3, 2025
Understanding the UV Index in Porto Belo, Brazil is crucial for protecting your skin and overall health. With its warm Cfa climate and varying UV exposure throughout the day, being aware of UV levels can help prevent sunburns and long-term skin damage. During peak sunshine hours, especially between 11:00 AM and 1:00 PM, the UV Index often reaches a level of 6, indicating a high risk for harm from unprotected sun exposure. Stay informed and take the necessary precautions to enjoy the beautiful Brazilian sun safely!
The UV Index throughout the day tells a compelling story of sun exposure. Starting at 07:00, the index is a low 1, gradually rising to a moderate 3 by 09:00. As the clock strikes 10:00, it hits 4, indicating increasing intensity. The peak occurs between 11:00 and 13:00, where the index reaches its maximum of 6, suggesting a need for sun protection. From this high point, the index begins to descend, dropping to 5 at 14:00, before tapering off to 3 by 15:00. As daylight wanes, the UV Index falls sharply to 1 by 16:00, ultimately dropping to 0 by 18:00 and staying there through 19:00. This highlights the importance of vigilance during midday hours when UV radiation is at its strongest.
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 | 6 | 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 experiences notable fluctuations throughout the year, with the highest levels recorded during the winter months and a gradual decrease into the summer. January, February, and March consistently display extreme UV levels, peaking at 15, which indicates an urgent need for protective measures—10 minutes of sun exposure can result in burns. As April arrives, the UV Index drops slightly to 10 but remains within the very high category, allowing for a 15-minute burn time. The summer months of June and July see a moderate UV Index of 5, offering more leeway with a burn time of 30 minutes. However, as August and September return to very high levels, with indices of 8 and 10, the risk of sun damage reemerges, demanding attention to sun protection in just 15 minutes. This trend continues into October and November, where UV readings climb back to extreme levels. Residents and visitors alike should take care during January to March and October to November, as these months are particularly high-risk for UV exposure. It's advisable to wear protective clothing, apply sunscreen regularly, and seek shade during peak sunlight hours to mitigate potential harm from the sun's rays.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Porto Belo | 15 | 14 | 12 | 10 | 7 | 5 | 5 | 8 | 10 | 12 | 14 | 15 |
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 |