Last updated: June 2, 2025
Understanding the UV Index in Guanmenshan, China, is vital for protecting your skin against harmful ultraviolet rays. With a climate classified as Dwb, Guanmenshan experiences significant UV exposure, particularly during peak sunlight hours. By keeping an eye on UV levels, you can take proactive measures against sunburn, premature aging, and other skin health issues. As UV Index readings climb to 9 during midday, understanding these levels is essential for enjoying the outdoors safely, so you can make informed decisions about sun protection while reveling in the beauty of this stunning region.
The UV Index throughout the day showcases a dynamic pattern, peaking sharply at noon. Starting from a modest 2 at 07:00, it gradually climbs to 4 by 08:00 and reaches a notable 5 at 09:00. As the sun climbs higher, the intensity escalates, hitting a maximum of 9 at 12:00, before beginning its descent in the afternoon. The Index inches down to 8 from 13:00, then gently falls to 5 at 15:00, and continues its decline to 2 by 17:00. As the evening approaches, the UV levels taper off, settling at a low 1 by 19:00. This data emphasizes the importance of sun safety measures particularly during the midday hours when UV exposure is most critical.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 9 | 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 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index demonstrates notable seasonal variations that affect exposure risk. January and February have relatively low to moderate UV levels (Index 2-3), with safe burn times of 45 and 30 minutes respectively. As spring approaches, March sees a rise to an index of 5, and by April, it reaches 6, marking the beginning of high-risk months. The most critical period arrives in May and June, where the UV Index peaks at 8-9, indicating very high exposure risk and a reduced burn time of just 15 minutes. July and August maintain this peak, before tapering off in September with a return to a high risk (UV Index 6). October brings a moderate reduction (Index 4), while winter months November and December drop back to low levels. Visitors and residents should be particularly vigilant during May through September, using sunscreen and protective clothing to minimize harmful effects during these high-risk months.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Guanmenshan | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| 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 |