Last updated: June 2, 2025
Understanding the UV Index is vital for residents of Changyuan County, China, where the warm Cwa climate can elevate daily UV exposure risks. With UV levels peaking at a notable 10 around noon, awareness of these fluctuations is crucial for sunburn prevention and maintaining long-term skin health. By recognizing how UV radiation varies throughout the day, residents can take appropriate precautions, enjoy outdoor activities safely, and protect their skin from harmful effects. Stay informed and safeguard your well-being against the sun's intensity!
The UV Index for the day offers a dynamic range that peaks around midday. Starting at a mild level of 1 at 07:00, the intensity gradually escalates, reaching a notable 3 by 08:00. As the sun climbs higher, the index hits 5 at 09:00 and gets serious by 10:00 with a 7. The true zenith arrives at 12:00, where the UV Index soars to an impressive 10, signaling the highest sun exposure risk. The afternoon sees a gradual decline—dropping to 9 at 13:00 and then easing to 8 by 14:00. By late afternoon, the index falls to 5 at 15:00, continuing its descent to 3 at 16:00, 2 at 17:00, and finally tapering back to 1 as the evening sets in. Stay sun-smart during 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 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV levels exhibit significant seasonal changes, with high-risk months typically occurring from April to September. During this period, the UV Index reaches very high levels (8-10), with minimal burn times of just 15 minutes for exposed skin, particularly evident in June, July, and August. In contrast, the UV Index is lower in the winter months of January, February, and December, categorized as moderate with burn times of 30 minutes. Visitors and residents are advised to take necessary precautions during the high-risk months, such as wearing sunscreen, protective clothing, and wide-brimmed hats, and seeking shade during peak sun hours to minimize the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Beijing UVI | 2 | 3 | 5 | 8 | 9 | 9 | 10 | 9 | 7 | 6 | 4 | 2 |
| Changyuan County | 3 | 4 | 7 | 8 | 9 | 10 | 10 | 10 | 8 | 7 | 4 | 3 |
| Chengdu UVI | 5 | 6 | 8 | 10 | 12 | 11 | 11 | 10 | 11 | 8 | 6 | 4 |
| Shanghai UVI | 5 | 6 | 8 | 10 | 10 | 11 | 12 | 11 | 11 | 8 | 6 | 4 |
| Guangzhou UVI | 7 | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 11 | 10 | 9 | 7 |
| Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |