Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Chengui, China, where the climate falls within the humid subtropical zone (Cfa). With UV levels peaking at a dangerous 12 during midday, awareness of these levels can significantly impact skin health and sunburn prevention. As the sun's intensity varies throughout the day, recognizing the risks associated with prolonged exposure becomes essential—especially in a region known for its warm, sunny weather. Stay informed and protect your skin by keeping an eye on the UV Index, ensuring that fun in the sun doesn’t lead to harmful consequences.
As the sun rises, the UV Index begins modestly at 1 at 7:00 AM, indicating a low risk of harm from unprotected sun exposure. By 9:00 AM, it climbs to 5, signaling a moderate risk, and peaks spectacularly at 12 by noon—a high risk that demands protective measures. The intensity remains elevated at 11 around 1:00 PM, before gradually descending through the afternoon—falling to 4 by 4:00 PM and tapering off to a pleasant 1 by 6:00 PM. If you’re planning outdoor activities, be sure to take precautions during the peak hours around 11:00 AM to 1:00 PM when the UV Index is at its highest!
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 | 8 | very high | 15 min |
11:00 | 10 | very high | 15 min |
12:00 | 12 | extreme | 10 min |
13:00 | 11 | extreme | 10 min |
14:00 | 9 | very high | 15 min |
15:00 | 6 | high | 25 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, the UV Index experiences significant fluctuations, with the highest levels typically occurring from June to August, when it reaches an extreme level of 12, resulting in a burn time of just 10 minutes. March through May also presents high risk, with UV indexes ranging from 8 to 10, corresponding to very high exposure categories and shorter burn times. Visitors and residents should be particularly vigilant during these high-risk months—March to September—to minimize skin damage by seeking shade, wearing protective clothing, and applying sunscreen regularly. Conversely, the UV Index is lower in January, December, and November, where exposure is classified as moderate to high, allowing for longer safe sun exposure times. Prioritizing sun safety year-round is essential to protect against UV radiation.
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 |
Chengui | 5 | 7 | 8 | 10 | 10 | 12 | 12 | 12 | 10 | 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 |