Last updated: June 2, 2025
In Chishan, China, staying informed about the UV Index is crucial for protecting your skin and overall health. Understanding UV levels can help you prevent sunburn and minimize long-term skin damage—risks that are particularly heightened in this temperate climate characterized by hot summers. With peak UV exposure reaching a maximum of 10 around noon, awareness of daily fluctuations in the UV Index is essential for safe outdoor activities. Whether you're enjoying the sun's warmth or engaging in outdoor sports, knowing how to safeguard yourself against harmful UV rays can ensure a healthier lifestyle in Chishan.
As the sun rises, the UV Index begins its steady ascent, starting at a modest 2 by 7:00 AM. By 8:00 AM, it climbs to 4, signaling the start of a more intense day. The index peaks at a striking 10 between 11:00 AM and 12:00 PM, indicating the highest levels of ultraviolet radiation and highlighting the need for sun protection. As the afternoon unfolds, the UVI gradually declines from 9 at 1:00 PM to 5 by 3:00 PM, before retreating to a low of 1 by 5:00 PM and remaining stable through the evening. This hourly progression not only reflects the sun's power but also serves as a reminder to stay vigilant and protect your skin during the peak hours of exposure.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 10 | 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 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index shows significant fluctuations, with the highest values occurring during the summer months. From January to February, exposure levels remain moderate (UV Index 3-4), allowing for a burn time of 30 minutes. As we move into March and April, the index rises sharply, reaching high (6) and very high (8) levels, with burn times decreasing to 25 and just 15 minutes, respectively. The months of May through August pose the highest risk, with UV Index readings peaking at 11 and 12 during July and August, where even short exposures can lead to sunburn (10 minutes burn time). After this peak, the index gradually decreases in September (9) and October (7), yet still demands caution with burn times of 15 and 25 minutes. As winter arrives, November and December see a return to moderate levels, albeit with a sustained emphasis on protective measures. Visitors and residents should remain vigilant during the high-risk months of May through August, adopting sun safety protocols like wearing sunscreen, protective clothing, and seeking shade during peak hours.
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 |
| Chishan | 3 | 4 | 6 | 8 | 9 | 10 | 11 | 12 | 9 | 7 | 4 | 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 |