Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Zengtian, China, where sun exposure can pose significant risks to skin health. With UV levels peaking at an intense 13 during midday, being aware of these fluctuations is vital for preventing sunburn and safeguarding against long-term skin damage. Zengtian’s Cfa climate brings warm, humid summers, making it even more imperative to monitor UV exposure throughout the day. From early morning to late afternoon, knowing when the UV Index rises can help you make informed decisions about sun protection and enjoy the outdoors safely.
As the sun climbs higher, the UV Index reaches its peak intensity around 12:00 PM, soaring to a striking 13—a clear signal for outdoor enthusiasts to take precautions. The morning hours start gently, with a low of 1 at 07:00 AM, gradually escalating to 6 by 09:00 AM and hitting 9 at 10:00 AM. By 11:00 AM, the sun begins to assert itself with a 12. However, as the afternoon progresses, the UV intensity starts to wane, dropping to 10 at 2:00 PM, and tapering off to a mere 2 by 5:00 PM. As daylight diminishes, the UV Index dwindles to 0 by 7:00 PM, inviting a much-needed respite from the sun’s relentless rays. Always be vigilant and protect your skin during those peak hours!
| 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 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 13 | 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, the UV Index experiences significant fluctuations, with the highest values occurring from March to September, when the index reaches an extreme level of 12 to 13. Notably, February marks the transition into high UV levels, and April through August are particularly high-risk months, with a burn time as short as 10 minutes during this period. As summer approaches, residents and visitors should be vigilant and prioritize sun protection strategies, such as wearing sunscreen, hats, and UV-protective clothing, to minimize the risk of skin damage. In contrast, January, October, November, and December see a decrease in the UV Index, categorized as either high or very high, allowing for longer safe exposure times—up to 25 minutes in January and December. It is essential to remain aware of changing UV levels, particularly during these peak months, to ensure health and safety in sunlight.
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 |
| Zengtian | 7 | 9 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 10 | 9 | 7 |
| Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |