Last updated: July 2, 2025
In Shentang, China, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn. With climate zone Cwa presenting a variety of sunlight exposure throughout the year, understanding UV levels helps residents and visitors alike to take necessary precautions against harmful rays. For instance, during peak hours (between 10 AM and 2 PM), UV Index levels can soar to a striking 13, indicating a high risk of harm to skin. By staying informed about these fluctuations, you can better protect yourself and enjoy the beautiful outdoors without compromising your health.
The UV Index for the day starts off mild, peaking at 1 at 7:00 AM, and gradually increases to a moderate level of 2 by 8:00 AM. As the sun climbs higher, the intensity rises sharply, reaching its maximum of 13 at 12:00 PM and sustaining this level until 1:00 PM, indicating a significant risk for sun exposure. Post noon, the UV Index begins to decline, dropping to 9 by 3:00 PM and further tapering off to a gentle 3 at 5:00 PM. By 6:00 PM, it settles back to a comfortable 1, perfect for evening strolls. This pattern highlights the importance of seeking shade and protection during the peak hours, especially between 11:00 AM and 1:00 PM when the UV radiation is most intense.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure levels fluctuate significantly, with January and February marking the beginning of very high UV Index levels (8-10), where the recommended burn time is only 15 minutes. As spring approaches, March to May sees a shift to extreme levels, peaking at 14 in August, which means visitors and residents should exercise extreme caution, with burn times reduced to just 10 minutes during this critical period. After August, the UV Index begins to decline, but September through November still maintains extreme to high exposure levels, advising caution with burn times adjusting from 10 to 15 minutes. By December, the UV Index decreases to 7, requiring a longer burn time of 25 minutes. In summary, the highest risk months for UV exposure are from March to August, and it is crucial for everyone to protect their skin with appropriate clothing and sunscreen to prevent harmful effects from 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 |
| 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 |
| Shentang | 8 | 10 | 12 | 12 | 13 | 13 | 13 | 14 | 12 | 11 | 9 | 7 |