Last updated: June 2, 2025
Understanding the UV Index in Dongtan, China is crucial for safeguarding your skin against harmful ultraviolet radiation. The UV Index serves as a vital indicator of sun exposure, helping residents and visitors alike prevent sunburn and promote long-term skin health. In Dongtan's ET climate, where UV levels can peak dramatically—reaching an intense 18 between noon and 1 PM—being informed about these fluctuations is essential. With typical risks including sunburn during midday hours, staying aware of the UV Index empowers you to protect yourself and enjoy the outdoors safely.
The hourly UV Index data reveals a dramatic increase in sun exposure throughout the day. Starting at a mild 1 at 07:00, the UV Index climbs steadily, hitting 2 by 08:00. A noticeable shift occurs around 09:00 when it surges to 5, and by 10:00, it skyrockets to 9. The peak intensity is reached between 12:00 and 13:00, with readings of 17 and 18, respectively, indicating a need for protective measures. The UV Index begins to decline after 14:00, falling back to 14 by 15:00, and dipping further to 3 by 18:00 before returning to 1 at 19:00. This data underscores the importance of seeking shade and using sunscreen during the midday hours when the UV levels are at their highest.
| 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 | 9 | very high | 15 min |
| 11:00 | 14 | extreme | 10 min |
| 12:00 | 17 | extreme | 10 min |
| 13:00 | 18 | extreme | 10 min |
| 14:00 | 17 | extreme | 10 min |
| 15:00 | 14 | extreme | 10 min |
| 16:00 | 10 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 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 |