Last updated: August 1, 2025
Understanding the UV Index in Jianshan, China is crucial for protecting your skin and overall health. With typical summer temperatures and clear skies, solar UV exposure can reach dangerously high levels, peaking at UV Index 13 during midday hours. Awareness of UV levels helps residents and visitors prevent sunburn and long-term skin damage, making it essential to stay informed about daily changes in UV intensity. As you navigate the sunny days of Jianshan's climate, knowing when to seek shade or apply sunscreen can significantly reduce health risks associated with excessive sun exposure.
The UV Index data paints a vivid picture of the sun's intensity throughout the day. Starting at dawn, the index was low, peaking at 1 at 7 AM. As the hours progressed, the UV Index climbed steadily, reaching a notable 12 by noon—a signal for sun protection. The sun's power peaked at 1 PM with an impressive index of 13, demanding caution for those outside. As the afternoon wore on, the index began its descent, dropping to 9 at 3 PM. By the evening, it returned to a mild 1 at 6 PM, heralding a safe retreat from the day's solar intensity. This data serves as a reminder to adapt our outdoor plans as the sun travels across the sky.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 8 | 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 Index levels exhibit significant variation, with the highest peaks occurring during the summer months. January and December experience a moderate UV Index of 5, allowing for a safer outdoor experience with a burn time of 30 minutes. As spring approaches, UV levels begin to rise, peaking in April and July with an extreme UV Index of 11 and 13, respectively, resulting in a mere 10-minute burn time during these high-risk months. The late spring and summer from March through September present serious risks, with indices reaching 12 or higher, necessitating caution. Visitors and residents are advised to take precautions by seeking shade, wearing protective clothing, and applying sunscreen regularly, especially during the high-risk months of March through September when exposure is most dangerous. As fall arrives, UV levels start to decrease, offering slightly safer conditions but still remaining vigilant in October and November with indices of 9 and 7.
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 |
| Jianshan | 5 | 7 | 9 | 11 | 12 | 12 | 13 | 12 | 12 | 9 | 7 | 5 |
| 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 |