Last updated: July 2, 2025
Staying informed about the UV Index in Xi'an, China, is crucial for safeguarding your skin against harmful radiation. Understanding the varying UV levels throughout the day is integral to preventing sunburn and promoting long-term skin health. With Xi'an's Cfa climate, characterized by hot summers and varying UV exposure, awareness of the UV Index becomes even more paramount. During peak hours, particularly between 11:00 AM and 1:00 PM, the UV Index can reach a scorching 12 to 13, making it essential for residents and visitors alike to take protective measures for healthier, safer outdoor experiences.
The UV Index rises sharply as the day progresses, peaking in the early afternoon. At 07:00, it starts at a mild 1, but by 09:00, it escalates to 5, signaling the arrival of more intense sunlight. 10:00 sees the index reach 8, and by 11:00, it hits a formidable 11, indicating high exposure risk. Just one hour later, the UV Index reaches its zenith at 12:00 with a striking 12, and the maximum is recorded at 13:00 at 13. However, after this peak, UV levels begin to descend, dropping to 11 by 14:00, and gradually falling to 8 at 15:00. As the sun sets, the UV Index dwindles to 5 by 16:00, and finally tapers off to 3 at 17:00, before returning to a safe 1 from 18:00 onwards. It's a day to heed sun safety, particularly during those intense midday hours!
| 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 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 8 | 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 the highest levels typically occurring from April to August. During this period, the UV Index peaks at 13 in July, categorizing it as extreme, where the burn time is just 10 minutes. The high-risk months for UV exposure are March through August, when the Index ranges from 9 to 13, significantly increasing the potential for skin damage. In contrast, January, February, and November present lower risks, with UV Index values of 6 to 7, offering 25 minutes of safe exposure. To protect yourself during high UV months, it is advisable to seek shade, wear protective clothing, and apply sunscreen regularly, especially between 10 a.m. and 4 p.m. when the sun's rays are strongest. Visitors and residents should remain vigilant and take necessary precautions during these peak months to minimize health risks.
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 |
| Xi'an | 6 | 7 | 9 | 11 | 11 | 12 | 13 | 12 | 10 | 9 | 7 | 5 |
| 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 |