Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Yushan, China, where sun exposure can pose significant risks, especially during the summer months. As the UV levels can soar to a staggering 11 at midday, being aware of these fluctuations is key to preventing sunburns and protecting overall skin health. This region experiences a Cwa climate, characterized by hot summers and moderate UV exposure, making knowledge of UV intensity essential for enjoying outdoor activities safely. Stay informed and shield yourself from harmful rays by checking the UV Index regularly!
As the sun rises, the UV Index begins at a gentle 1 at 7:00 AM, but it quickly escalates as the day progresses. By 10:00 AM, the index reaches 7, signaling a significant increase in UV radiation. The peak occurs at 12:00 PM and 1:00 PM, when it hits a striking 11, indicating very high risk of harm from unprotected sun exposure. As the afternoon unfolds, the index gradually declines, settling at 8 by 3:00 PM, then tapering off to 1 again by 7:00 PM. It's clear that midday is the time for caution—make sure to protect your skin during those hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 10 | very high | 15 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 |
As the seasons change, the UV Index fluctuates significantly, indicating varying levels of solar intensity. High-risk months for UV exposure are from April to August, when the index reaches extreme levels (11), resulting in a burn time of just 10 minutes. March begins the rise with a high index of 7, while September and October also present considerable risk with values of 9 and 8, respectively. Residents and visitors should take precautions during these months, such as wearing sunscreen, protective clothing, and seeking shade to minimize the risk of skin damage. In contrast, the winter months of December and January offer moderate exposure, but even then, it’s wise to remain vigilant.
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 |
| Yushan | 4 | 5 | 7 | 9 | 11 | 11 | 11 | 11 | 9 | 8 | 5 | 3 |
| 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 |