Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors of Chenggang, China, where the climate is categorized as Cfa, characterized by hot summers and moderate humidity. With UV levels peaking at a significant 13 around midday, awareness of these readings is vital for preventing sunburn and protecting skin health. By monitoring the UV Index, you can make informed decisions about outdoor activities and ensure that you safeguard yourself from harmful effects of overexposure to sunlight. In the sun-rich environment of Chenggang, recognizing UV risks can make all the difference in enjoying beautiful days outdoors while maintaining your well-being.
As the sun rises, the UV Index begins its ascent, starting at a mild 1 at 7:00 AM. By 8:00 AM, it climbs to a moderate 3, but the real intensity kicks in after 9:00 AM when it reaches 6. The peak occurs between 11:00 AM and 12:00 PM, soaring to a blistering 12 and hitting a maximum of 13 at noon, indicating a serious need for sun protection. The intensity gradually diminishes in the afternoon, dropping to 10 by 2:00 PM and then sliding down to 4 by 4:00 PM. As the day winds down, the UV Index traces back to 2 at 5:00 PM and finally settles at 1 by 7:00 PM, welcoming the cool embrace of evening. Staying vigilant about sun safety is crucial during peak hours from 10:00 AM to 2:00 PM!
| 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 | 12 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV exposure varies significantly, with high-risk months peaking from February to September, where UV Index values range from 9 to 13 and are classified as very high to extreme. The highest UV Index of 13 occurs in May, July, and August, indicating a critical need for protection. March and April also present extreme levels, making spring an important time to be vigilant. In contrast, January and December have reduced risk with UV Index levels of 6 and longer burn times of 25 minutes. Visitors and residents are advised to take precautions during the high-risk months by wearing broad-spectrum sunscreen, protective clothing, and sunglasses, and to seek shade during peak sunlight hours to minimize the risk of UV-related health issues.
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 |
| Chenggang | 6 | 9 | 11 | 12 | 13 | 12 | 13 | 13 | 11 | 9 | 8 | 6 |
| 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 |