Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Itanhaem, Brazil, where the sun shines brightly over a Cfa climate—characterized by warm summers and mild winters. This knowledge empowers individuals to take proactive measures against harmful UV exposure, helping to prevent sunburn and protect skin health. With peak UV levels reaching up to 6 in the early afternoon, it’s vital to be aware of these risks. Embrace the beauty of Itanhaem's beaches, but remember that vigilance is key to enjoying the sun safely!
The UV Index today showcased a notable increase from the early morning hours, starting at a gentle 1 at 07:00 and 08:00. As the sun rose higher in the sky, the index climbed steadily, reaching a significant 6 by 12:00, indicating a peak in UV radiation and the need for sun protection. The afternoon saw a slight decline, with values dropping to 4 at 14:00 and falling further to 2 by 15:00. As the day wound down, the UV index returned to a safer range, ending the day at 0 by 19:00. It’s crucial to stay informed and safeguard your skin during those high UV hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 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 exhibits significant seasonal variations, with the highest levels occurring in the winter months and early spring. From January to March, the UV Index remains extremely high, peaking at 15, indicating a risk of harm from unprotected sun exposure in just 10 minutes. The months of April and May see a slight decrease but remain very high, with a UV Index of 10 and 8 respectively, requiring 15 minutes of protection against sunburn. June and July provide some respite, classifying as high exposure with a burn time of 25 minutes, but the Index again spikes in August. The late summer and early fall return to extreme levels, particularly in September and October, where the Index hits 11 and 13. Finally, the UV levels surge back to extreme in November and December, which are crucial months for residents and visitors to emphasize sun safety. High-risk months include January, February, March, September, October, and November, where the recommended exposure time is only 10 minutes. To protect against harmful UV rays, it is essential for individuals to seek shade, wear sunscreen, and don protective clothing, especially during these peak months.
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 |
| Itanhaem | 15 | 14 | 12 | 10 | 8 | 6 | 6 | 8 | 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 |