Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Shuidong, China, especially given the region's Cwa climate, characterized by hot, humid summers. With peak UV levels reaching as high as 13 around midday, awareness of these fluctuations is essential for sunburn prevention and maintaining skin health. By tracking the UV Index, you can make informed decisions about sun exposure, protecting yourself from harmful ultraviolet rays that can lead to both immediate discomfort and long-term skin damage. Whether you're enjoying the sun outdoors or engaging in daily activities, being aware of current UV levels ensures that you can enjoy the beautiful weather while staying safe.
The UV Index on this particular day displays a striking pattern as the sun climbs higher in the sky. At 07:00, the index starts low at 1, but quickly escalates as 08:00 ushers in a 2. By 09:00, it jumps to 5, and the intensity escalates significantly at 10:00, peaking at a robust 13 between 12:00 and 13:00. As we approach the afternoon, the index gradually declines, hitting 9 at 15:00, then tapering off to 5 by 16:00. A gentle drop continues with values returning to 3 at 17:00, and settling back to 1 by 18:00 and 19:00. This hourly profile underscores the need for sun protection during the hours when the UV index is at its highest, especially between 11:00 and 13:00.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV levels fluctuate significantly, with peak intensity occurring from March to October. The highest risks are noted during the summer months of May through August, where the UV Index consistently reaches 13 or higher, categorized as extreme, and the recommended burn time drops to just 10 minutes. February also presents a high risk with an Index of 10, while November sees a decrease to 9, still categorized as very high. Residents and visitors should take precautions during the high-risk months by seeking shade, wearing protective clothing, and regularly applying sunscreen to minimize skin damage. As a general rule, it's crucial to be vigilant with sun protection from March to October, especially during peak hours between 10 AM and 4 PM.
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 |
| 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 |
| Shuidong | 7 | 10 | 12 | 12 | 13 | 13 | 13 | 14 | 12 | 12 | 9 | 7 |