Last updated: July 2, 2025
Understanding the UV Index is essential for the residents of Entre Rios, Brazil, a region blessed with a warm climate that comes with its own set of sun exposure risks. Awareness of UV levels not only helps in preventing painful sunburns but also plays a crucial role in maintaining long-term skin health. With the UV Index peaking at 10 during midday hours, the importance of protective measures cannot be overstated. Whether you're enjoying the outdoors or simply going about your daily activities, staying informed about UV exposure is key to enjoying the sunny days safely in Entre Rios.
The UV Index throughout the day showcases a notable peak from 11:00 AM to 12:00 PM, where it reaches a high of 10, indicating very high levels of UV radiation and a strong need for sun protection. This intense sunlight starts to build up at 9:00 AM with a reading of 5, escalating to 8 by 10:00 AM. As the afternoon unfolds, the index gradually declines, dropping to 6 at 2:00 PM, followed by a significant decrease back to 3 by 3:00 PM. By the evening, the UV levels return to safe numbers, tapering off to 1 at 4:00 PM and 0 by 6:00 PM, prompting a welcome end to 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 | 3 | moderate | 30 min |
09:00 | 5 | moderate | 30 min |
10:00 | 8 | very high | 15 min |
11:00 | 10 | very high | 15 min |
12:00 | 10 | very high | 15 min |
13:00 | 8 | very high | 15 min |
14:00 | 6 | high | 25 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 |
Throughout the year, UV radiation levels remain notably high, with the most extreme months identified as November (UV Index 15), followed closely by January, February, March, April, August, September, and October (UV Index 14). During these months, the burn time is as short as 10 minutes, necessitating heightened awareness and protection. Conversely, June and July see a slight reduction in risk (UV Index 9 and 10, respectively), extending burn time to 15 minutes. Residents and visitors are strongly advised to take precautionary measures year-round, wearing sunscreen, protective clothing, and sunglasses, especially during the high-risk months to minimize the likelihood 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 |
Entre Rios | 14 | 14 | 14 | 13 | 11 | 9 | 10 | 12 | 13 | 14 | 15 | 14 |
Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |