Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Chengjiao, China, where the unique climate zone (Cwa) can lead to significant sun exposure throughout the year. With peak UV levels reaching a risky 13 around noon, awareness of these UV fluctuations is essential for preventing sunburn and maintaining overall skin health. Being informed about the UV Index not only helps you enjoy the outdoors safely but also empowers you to take necessary precautions against excessive exposure, especially in a place where the sun's intensity can pose serious skin health risks. Whether you’re lounging at the beach or participating in outdoor activities, recognizing the importance of UV levels in Chengjiao will allow you to protect your skin effectively while enjoying all that this vibrant region has to offer.
From sunrise to sunset, the UV Index reveals a striking pattern in sunlight intensity. At 07:00, the index begins at a mild 1, gradually climbing to 3 by 08:00. The real leap follows; by 09:00, it reaches 6, and as the day unfolds, the index peaks at an intense 13 from 12:00 to 13:00. This midday brightness serves as a reminder to protect your skin when UV levels are highest. As the afternoon wanes, the index declines to 11 at 14:00, gently dropping further to 8 by 15:00, and continuing its descent to 2 at 17:00. Finally, by 18:00 and beyond, it settles back down to a low 1 as the day wraps up, showcasing the sun's cyclical dance in the sky. Stay safe and plan your outdoor activities accordingly!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV Index levels exhibit significant seasonal changes, reaching their peak during the summer months. Notably, March through September are categorized as high-risk months, with UV Index readings often in the extreme range of 11 to 13, resulting in a burn time of just 10 minutes for unprotected skin. Visitors and residents are advised to take precautionary measures during these months, such as wearing broad-spectrum sunscreen, protective clothing, and seeking shade, especially between 10 a.m. and 4 p.m. As the year transitions into October and November, the UV Index remains high at levels 9 to 10, indicating that while the risk decreases slightly, vigilance is still essential. January and December present a lower risk with an index of 7, but caution is still warranted during these months.
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 |
| Guangzhou UVI | 7 | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 11 | 10 | 9 | 7 |
| Chengjiao | 7 | 9 | 12 | 11 | 13 | 13 | 13 | 13 | 11 | 10 | 9 | 7 |
| Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |