Last updated: August 1, 2025
Understanding the UV Index in Sishiba, China, is crucial for maintaining skin health and preventing sunburn, especially in this Cfa climate zone, where UV exposure can be significant during peak hours. With UV levels soaring as high as 12 during midday, it’s essential for residents and visitors to be aware of the potential risks. By monitoring the UV Index, you can take necessary precautions to protect your skin from harmful rays and enjoy the sunny days with confidence. Whether you're planning outdoor activities or simply soaking up the sun, understanding these UV levels is vital for your health.
As the sun rises, the UV Index begins its climb, starting at a modest 2 by 7:00 AM. By 8:00 AM, it nudges up to 3, but the real surge happens around 9:00 AM, peaking at an intense 6. The midday sun blasts forth, pushing the UV Index to a staggering 12 by 12:00 PM—the highest point of the day. Stay alert as it hovers at 12 through 1:00 PM before gently descending to 9 at 2:00 PM. The afternoon brings a gradual decline, with the index dropping to 4 by 4:00 PM and dwindling to 1 by 6:00 PM, before finally settling at a trace level of 0 by 7:00 PM. It's clear: the peak sun hours demand caution and protection!
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 | 12 | extreme | 10 min |
13:00 | 12 | extreme | 10 min |
14:00 | 9 | very high | 15 min |
15:00 | 6 | high | 25 min |
16:00 | 3 | 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 index levels fluctuate significantly, with high-risk months typically spanning from February to September. During this period, the UV index reaches extreme levels of 11-12, creating a burn time of just 10 minutes, particularly from April to August. Notably, March and October also present very high UV indexes (10 and 8 respectively), where burn times decrease to 15 minutes. To ensure safety, visitors and residents are advised to limit sun exposure, especially between 10 a.m. and 4 p.m., and to use broad-spectrum sunscreen with a high SPF, wear protective clothing, and seek shade whenever possible during these months. In contrast, from November to January, the risk is lower with UV indexes ranging from 5 to 7, allowing for longer exposure times without significant risk.
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 |
Sishiba | 6 | 8 | 10 | 11 | 12 | 12 | 12 | 12 | 11 | 8 | 7 | 5 |
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 |