Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Zhangjiazhuang, China, where sun exposure can vary significantly throughout the day. A clear grasp of UV levels not only helps in preventing painful sunburns but also plays a vital role in maintaining long-term skin health. With Zhangjiazhuang's Cwa climate, known for its warm summers and moderate UV exposure, daily UV levels can peak as high as 9 during midday hours. By monitoring the UV Index, you can enjoy the sun while staying protected and keeping your skin safe from harmful rays.
As the sun rises, the UV Index begins its steady climb. At 7:00 AM, it starts at a low 1, but by 8:00 AM, it bumps up to 3, signaling a gradual increase in sun exposure. The real intensity kicks in around 10:00 AM, peaking at a sizzling 9 from 11:00 AM to 1:00 PM, making it crucial for sun protection during these hours. As the afternoon progresses, the index dips gradually, falling to 5 by 3:00 PM and further down to 2 by late afternoon. By 6:00 PM, it recedes to a safe 1 once again, emphasizing the importance of planning outdoor activities during the early hours when UV levels are at their lowest. Remember to stay protected as the day heats up!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 9 | 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 |
As the seasons change, so do the UV Index levels, significantly influencing sun exposure risk. In the winter months of January and December, the UV Index is low (2), allowing for longer exposure times of up to 45 minutes without burning. February marks a transition to moderate exposure (UV Index 4) with a burn time of 30 minutes. However, from March through September, the UV Index escalates, peaking at 10 during June and July, indicating very high exposure risk and a burn time of only 15 minutes. The high-risk months are clearly defined between April and August, when the UV Index remains consistently high to very high. With decreasing UV levels in the fall, October sees a high UV Index of 6, while November returns to moderate levels. For visitors and residents, it is crucial to adopt sun safety measures—such as using sunscreen, wearing protective clothing, and seeking shade—especially during the most dangerous months of April to August. Stay informed and protect your skin to enjoy the sun safely!
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 |
| Zhangjiazhuang | 2 | 4 | 6 | 8 | 9 | 10 | 10 | 9 | 8 | 6 | 3 | 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 |