Last updated: August 1, 2025
Understanding the UV Index in Cananeia, Brazil, is essential for safeguarding your skin and overall health. With Cananeia's Cfa climate, residents and visitors experience varying UV exposure throughout the day, highlighting the significance of being UV-aware. The sun can be quite intense, particularly around midday when the UV Index peaks at a level of 6, posing risks like sunburn and long-term skin damage. By staying informed about the UV levels, you can take the necessary precautions to enjoy the beautiful outdoors while protecting your skin health from the sun's harmful rays.
The UV Index forecast showcases a dynamic day ahead, starting off gently in the early morning with values of 1 at 07:00 and 08:00. As the sun rises higher, we see a gradual increase, peaking at 6 between 12:00 and 13:00, indicating a need for sun protection during these hours. Particularly, the 11:00 and 12:00 slots mark significant levels, reaching 5 and 6 respectively, suggesting that outdoor activities should be planned with caution. As the afternoon progresses, the UV Index dips to 5 at 14:00 and continues to fall, descending to 3 by 15:00. By evening, the UV Index returns to a safer level of 1 by 16:00, and drops to 0 from 18:00 onwards, indicating a soothing end to the day.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | 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 |
Throughout the year, the UV Index exhibits significant seasonal variations, with extremely high levels observed from January to March and again from September to November. The highest recorded UV Index of 15 occurs in January, February, and December, indicating an extreme exposure category with a burn time of just 10 minutes. April marks a slight drop to a UV Index of 10 (very high), while May, June, and July present a moderate risk (UV Index of 6 to 7), allowing for longer exposure times of up to 25 minutes. As summer yields to early autumn, the risk increases again, peaking at 11 in September and declining slightly through October and November with UV Indexes of 13 and 14, respectively. Visitors and residents are strongly advised to take precautions during high-risk months, specifically from January to March and September to November, by wearing protective clothing, using broad-spectrum sunscreen, and limiting sun exposure during peak hours to avoid severe sunburn.
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 |
| Cananeia | 15 | 15 | 12 | 10 | 7 | 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 |