Last updated: July 2, 2025
Understanding the UV Index in Guishan, China is crucial for safeguarding your skin and overall health. With the region's Cwa climate bringing intense sunlight, particularly during peak hours, awareness of UV levels becomes key to preventing sunburn and reducing long-term skin damage. During summer, for instance, the UV Index can soar as high as 15 around noon, signifying an extreme risk for harm. By grasping the dynamic fluctuations in UV exposure throughout the day, residents and visitors alike can take informed precautions to enjoy the sun safely while protecting their skin.
As the sun rises, the UV Index starts modestly, peaking at 1 at 7:00 AM and remaining low until 9:00 AM, where it reaches a 3. However, from 10:00 AM onwards, intensity escalates rapidly, hitting 7 before soaring to a striking 11 at 11:00 AM. The UV Index then reaches its zenith at 12:00 PM with a 14, before peaking at an impressive 15 by 1:00 PM. Thereafter, values gradually decline, dropping to 12 by 3:00 PM, then tapering off to 8 at 4:00 PM, and further down to 4 by 5:00 PM. As evening falls, the UV Index descends to 2 by 6:00 PM and finally returns to 1 at 7:00 PM, highlighting the importance of sun protection during peak hours from late morning into the early afternoon.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 15 | extreme | 10 min |
| 14:00 | 14 | extreme | 10 min |
| 15:00 | 12 | extreme | 10 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure varies significantly, peaking in the spring and summer months. The highest UV Index levels occur from May to July, with indexes reaching as high as 15, categorized as extreme exposure; during this period, the burn time drops to just 10 minutes. The months of February to April also present high risks, with UV indexes around 9 to 13 and very high to extreme exposure categories, reducing burn times sharply to between 10 and 15 minutes. As the year progresses into the fall and winter, UV levels decrease, with November and December returning to high levels but with burn times extending to 15 and 25 minutes, respectively. Visitors and residents are advised to take precautions, especially during high-risk months, by wearing protective clothing, using sunscreen, and limiting sun exposure during these critical periods.
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 |
| 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 |
| Guishan | 7 | 9 | 12 | 13 | 15 | 14 | 15 | 14 | 13 | 12 | 9 | 7 |