Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Jishu, China, as it serves as a key indicator of the sun's ultraviolet radiation levels throughout the day. With the potential for sunburn and long-term skin health issues, being aware of the UV levels can help you take precautionary measures to protect yourself and your loved ones. Situated in a Dwa climate zone, Jishu experiences significant UV exposure, particularly during peak hours when the index reaches a maximum of 10 around noon. By staying informed about the UV Index, you can enjoy the outdoors safely while minimizing the risks associated with intense sunlight.
As the sun rises, the UV Index begins its climb, starting at a modest 3 by 7:00 AM. By 9:00 AM, it escalates to 7—a signal to start seeking shade. The intensity peaks at 11:00 AM and 12:00 PM with an impressive 10, indicating a time for sunscreen application and careful outdoor planning. As the afternoon progresses, the index gradually declines, landing back at 5 by 3:00 PM and tapering off to 1 by late evening. Stay sun-safe during the peak hours, particularly between 10:00 AM and 2:00 PM!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so do the UV levels, significantly impacting sun safety for visitors and residents. From January to March, the UV Index starts low to moderate, with a burn time extending from 45 minutes in January to 30 minutes by March. April marks the transition to higher levels, with a UV Index of 7 and a burn time of 25 minutes. The most critical months for sun exposure are May through August, when the UV Index reaches its peak, hitting 10 in July, with a dangerously low burn time of just 15 minutes. As summer wanes, the UV Index declines in September to 7 (burn time: 25 minutes) and continues to moderate through October and November. To protect against harmful UV radiation, it is crucial for everyone to take precautions, especially during the high-risk months of late spring and summer. Wearing sunscreen, protective clothing, and seeking shade are essential practices during these times.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jishu | 2 | 3 | 5 | 7 | 8 | 9 | 10 | 8 | 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 |