Last updated: June 2, 2025
Understanding the UV Index in Shimenlou, China is essential for protecting your skin and overall health. With UV levels peaking at 12 during the midday hours, awareness of these fluctuations is crucial for sunburn prevention and long-term skin care. Shimenlou’s Cfa climate brings warm temperatures combined with high UV exposure, particularly between 10 AM and 2 PM when the sun is at its strongest. By staying informed about UV levels, residents and visitors can enjoy the outdoors safely while minimizing the risk of harmful sun damage.
As the sun rises, the UV Index begins its ascent, starting at a mild 1 at 07:00. By 08:00, it increases to a moderate 3, but the real surge comes just before noon. The index peaks at an intense 12 during the midday hours, specifically at 12:00, urging sun protection for those outdoors. Following this high, a gradual decrease occurs, with the values declining to 10 by 14:00, then tapering off to 7 at 15:00. As the day wanes, the UV intensity drops significantly, falling to 1 by 19:00, signifying a much safer period for sun exposure. This hourly UVI cycle illustrates a clear pattern: the importance of seeking shade and wearing sunscreen during the peak hours when the sun’s rays are the strongest.
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 | 8 | very high | 15 min |
11:00 | 11 | extreme | 10 min |
12:00 | 12 | extreme | 10 min |
13:00 | 11 | 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 | 1 | low | 45 min |
Seasonal UV changes indicate a significant increase in UV Index from January to July, with the highest levels occurring during the summer months of May to July, which are categorized as extreme (UV Index levels 11-13). The high-risk months for UV exposure are March through August, particularly when UV levels reach very high and extreme ranges. During these periods, burn times are notably short, with only 10-15 minutes recommended for safe sun exposure. Visitors and residents should take precautions by wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours to minimize the risk of skin damage. As the year progresses into October and November, UV exposure decreases, but caution should still be maintained in January and February, where high UV levels persist.
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 |
Shimenlou | 6 | 7 | 9 | 10 | 11 | 12 | 13 | 12 | 10 | 9 | 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 |