Last updated: August 1, 2025
Understanding the UV Index in Changtu, China is essential for protecting your skin and maintaining overall health. With a climate classified as Dwa, residents and visitors alike encounter varying levels of UV exposure throughout the day, particularly during the peak hours when the index can soar to as high as 10 between 11:00 AM and 12:00 PM. By keeping an eye on UV levels, you can take vital steps to prevent sunburn and reduce the long-term risks associated with skin damage. Being aware of these levels empowers you to enjoy the sun safely while enjoying all the beauty Changtu has to offer.
As the sun rises, the UV Index begins its steady ascent, starting at a modest 2 by 7:00 AM. By 8:00 AM, it climbs to 4, signaling the start of a more intense day. The index peaks at a striking 10 between 11:00 AM and 12:00 PM, indicating the highest levels of ultraviolet radiation and highlighting the need for sun protection. As the afternoon unfolds, the UVI gradually declines from 9 at 1:00 PM to 5 by 3:00 PM, before retreating to a low of 1 by 5:00 PM and remaining stable through the evening. This hourly progression not only reflects the sun's power but also serves as a reminder to stay vigilant and protect your skin during the peak hours of exposure.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 9 | 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 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index fluctuates significantly, indicating varying levels of sun exposure risk that visitors and residents should be aware of. From January to March, the index remains low to moderate, allowing for safer outdoor activities; however, as we move into April with a UV Index of 7, precautions should be taken as the risk escalates to high. The months of May through August present the highest risk, with UV Index values peaking at 10 in June and July, classifying these months as extremely hazardous for sun exposure, with a reduced burn time of just 15 minutes. By September, the index drops to 7, indicating high risk again, before returning to moderate levels in the fall and winter months of October to December. Therefore, during May to August, it is crucial for individuals to protect themselves from UV radiation by seeking shade, wearing protective clothing, and applying sunscreen frequently to minimize the risk of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Changtu | 2 | 3 | 5 | 7 | 8 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |
| 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 |