Last updated: August 1, 2025
In Cidreira, Brazil, staying informed about the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels helps you avoid harmful sunburns and long-term skin damage, making it essential for both locals and visitors. Cidreira's Cfa climate brings warm, sunny days, which means higher UV exposure, particularly during peak hours between 10 AM and 2 PM when the index can reach levels of 5. By monitoring the UV Index, you can take necessary precautions to enjoy the beautiful outdoors safely!
At dawn, the UV Index begins at a gentle 0 by 07:00, indicating minimal exposure risk. As the sun rises higher, the index steadily climbs, reaching 1 at 08:00 and peaking at 5 between 12:00 and 13:00, when the sun’s rays are at their most intense. During these peak hours, it’s wise to don your sunscreen and protective gear. Following this zenith, the index gracefully descends, dropping to 4 at 14:00 and tapering off to 2 by 15:00. As the afternoon fades to evening, the UV levels reduce significantly, returning to a safe 0 by 18:00. This hourly UV pattern underscores the importance of sun safety during peak daylight hours!
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 | 7 | high | 25 min |
13:00 | 6 | high | 25 min |
14:00 | 5 | moderate | 30 min |
15:00 | 3 | 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 |
Throughout the year, UV Index levels exhibit significant seasonal fluctuations, with high-risk months occurring primarily from January to March and again in November and December when the index reaches extreme levels (12 to 15), indicating a burn time of just 10 minutes. In April and September, the UV Index falls to very high levels (9), allowing slightly longer exposure times of 15 minutes, while May to August experience moderate to high levels (4 to 6) with burn times extending to 25-30 minutes. As such, it is strongly advised for both visitors and residents to take proactive sun protection measures during the extreme and very high UV Index months, including wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade when necessary to minimize the risk of skin damage.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Cidreira | 14 | 13 | 12 | 9 | 6 | 4 | 5 | 6 | 9 | 12 | 13 | 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 |