Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors in Dingdian, China, where the combination of a humid subtropical climate and high sun exposure can elevate the risk of harmful UV radiation. As the UV levels rise throughout the day, peaking at 11 around noon, awareness becomes essential not just for preventing painful sunburns but also for safeguarding long-term skin health. With Dingdian's typical summer days offering ample sunshine, knowing how to protect yourself during those peak hours can make all the difference in enjoying the great outdoor activities without compromising your skin's well-being.
As the sun rises, the UV Index starts off low at 2 by 7:00 AM, gradually climbing to 3 by 8:00 AM. The intensity peaks dramatically by 12:00 PM, reaching an impressive 11, signaling the height of midday sun. For the next hour, the index remains robust at 10, but begins to taper off thereafter. The numbers drop to 8 at 2:00 PM, then decline further to 5 by 3:00 PM. As the day transitions toward evening, the UV levels fall to 3 at 4:00 PM, then gently descend to 1 by 5:00 PM, finally tapering off to 0 by 7:00 PM. This data highlights the importance of sun safety during the peak hours between 10:00 AM and 2:00 PM, when protective measures are crucial!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The seasonal UV changes indicate a significant increase in UV exposure as the year progresses, with high-risk months being from March to October, where the UV Index reaches as high as 11 (extreme). Specifically, May to August poses the greatest risk, with a burn time of just 10 minutes in direct sunlight. Residents and visitors are advised to take precautionary measures during these months, including wearing protective clothing, sunglasses, and sunscreen to mitigate harmful effects. As the UV Index begins to decline in September, it remains important to stay vigilant until it drops to more moderate levels by December, when the burn time increases to 30 minutes again.
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 |
| Dingdian | 5 | 6 | 9 | 10 | 11 | 11 | 11 | 11 | 10 | 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 |