Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Jinhaihu, China, as it plays a vital role in safeguarding skin health and preventing sunburn. With a climate characterized by warm summers and cold winters (Dwa zone), Jinhaihu experiences varying UV exposure, particularly peaking during midday hours. On days with a maximum UV Index of 9, it’s essential to stay informed and take necessary precautions to protect yourself from harmful rays. Being aware of UV levels enables you to enjoy outdoor activities while minimizing the risk of skin damage and long-term health issues.
At dawn, the UV Index starts at a mild 2 at 07:00, gradually rising to a moderate 3 by 08:00. As the morning progresses, the intensity increases; by 09:00, it reaches 5, and peaks at a robust 9 from 11:00 to 13:00—making this the most critical time for sun exposure. Subsequently, the index begins to decline, dropping to 7 at 14:00 and tapering off to 5 by 15:00. As the afternoon transitions into evening, the UV Index steadily decreases to 3 at 16:00 and settles back to 2 by 17:00, eventually winding down to a low 1 by 18:00 and 19:00. This data serves as a reminder to stay sun-safe during the peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV levels vary significantly, impacting both visitors and residents. January and December present the lowest UV Index values (2), categorized as low, allowing for longer exposure times of up to 45 minutes without severe risk of sunburn. As spring approaches, February and March see a rise to a moderate UV Index of 4-5, with burn times decreasing to 30 minutes. However, from April through September, the UV Index peaks at 9-10, classified as very high, necessitating caution as burn times drop to just 15 minutes. Notably high-risk months are July and August, with the maximum UV Index of 10. As the year progresses into October with a high exposure category UV Index of 6 and a burn time of 25 minutes, concerns remain before winter returns to moderate levels in November. To protect against UV-related damage, it is crucial for everyone to be sun-smart, especially during high-risk months. Utilize shade, wear protective clothing, and apply sunscreen regularly when outdoors, particularly from spring to early fall.
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 |
| Jinhaihu | 2 | 4 | 5 | 9 | 9 | 9 | 10 | 9 | 8 | 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 |