Last updated: August 1, 2025
In Dongtan, China, awareness of the UV Index is crucial for safeguarding your skin health and preventing sunburn. Understanding UV levels can help residents and visitors make informed decisions about sun exposure, especially in a region characterized by an ET climate—where summer days can intensify UV radiation. With peak UV Index values soaring to 16 during midday hours, it's essential to take precautions to protect yourself from harmful rays. Stay informed and enjoy the sun safely while exploring the vibrant outdoor life Dongtan has to offer!
At dawn, the UV Index remains low, peaking at 1 by 7:00 AM. As the sun climbs higher, the intensity of ultraviolet radiation ramps up, reaching 2 by 8:00 and spiking to a notable 4 by 9:00. The real breakthrough occurs at 10:00 AM, when the index hits 7, indicating a significant rise in sun exposure risks. By noon, the index escalates to a staggering 14, and it soars to its maximum at 1:00 PM, reaching a peak of 16. This level of UV radiation stays steady through 2:00 PM before gently declining, dipping to 13 by 3:00 PM and gradually tapering off to 6 at 5:00 PM. As the day winds down, the UV Index falls back to more manageable levels, measuring 3 by 6:00 PM and returning to 1 by 7:00 PM, reminding us of the importance of sun safety during peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV radiation levels experience significant fluctuations, with high-risk months emerging primarily from February to September. The UV Index peaks in June at 18, categorized as extreme, where the burn time is a mere 10 minutes. Following closely are April, May, July, August, and September, all also classified as extreme with similar burn times. March and October enter the very high exposure category, further stressing the need for caution. During these months, visitors and residents should prioritize sun protection by using sunscreen, wearing protective clothing, and seeking shade, especially between 10 a.m. and 4 p.m. In contrast, during the quieter months of January, November, and December, UV levels remain lower, with exposure described as moderate to high. It is essential to stay informed and adjust personal sun safety practices accordingly to minimize health risks associated with overexposure to 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 |
| Dongtan | 3 | 7 | 10 | 13 | 14 | 18 | 16 | 13 | 11 | 9 | 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 |