Last updated: June 2, 2025
In Guidong Chengguanzhen, China, awareness of the UV Index is vital for maintaining optimal skin health and preventing sunburn. With much of the year characterized by its humid subtropical climate (Cfa), residents and visitors face significant UV exposure, especially during midday when levels can soar to a striking 14. Understanding these UV levels is crucial for adopting effective sun protection strategies, thereby safeguarding skin from potential damage. Whether you're spending time outdoors for leisure or daily activities, staying informed about the UV Index can help you enjoy the sun safely while minimizing health risks.
The UV Index throughout the day paints a vivid picture of sun intensity. Starting at a mild 1 at 7:00 AM, the sun gradually climbs, reaching a moderate 3 by 8:00 AM. As the day progresses, the UV exposure peaks at a striking 14 at 12:00 PM, making midday the most crucial time to seek shade or apply sunscreen. After this zenith, the index begins to decline, tapering to 11 at 1:00 PM and dropping further to 8 by 3:00 PM. The late afternoon offers some relief as the index falls to 4 at 4:00 PM, before dwindling to a gentle 1 by 6:00 PM. Be mindful of the sun's intensity; it's safest to enjoy outdoor activities during early morning or late afternoon when UV levels are lower.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 4 | 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 Index values exhibit significant variations, with the highest risks typically occurring from March to September. During this period, the index peaks at 14 in June, suggesting an extreme exposure category with a burn time of just 10 minutes. Conversely, January and December present lower risks with UV Index values of 7 and 6, categorized as high, allowing for burn times of 25 minutes. Visitors and residents are strongly advised to take precautions during the high-risk months—particularly from March to September—by wearing protective clothing, applying sunscreen, and seeking shade when the sun is at its peak to prevent harmful effects from UV radiation.
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 |
| Guidong Chengguanzhen | 7 | 10 | 11 | 12 | 13 | 14 | 13 | 13 | 12 | 10 | 9 | 6 |
| Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |