Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors in Changbu, China, a region characterized by a humid subtropical climate (Cfa) that can bring about significant sun exposure risks. Being aware of UV levels is essential not just for preventing painful sunburns, but also for maintaining long-term skin health. During peak hours, particularly between 11 AM and 1 PM, the UV Index can soar to a maximum of 13, indicating an extreme risk of harm from unprotected sun exposure. As the sun ascends in the sky, so do the UV levels, making it vital to stay informed and take appropriate precautions to enjoy the beautiful outdoors safely!
As the sun climbs higher, the UV Index reaches its peak intensity around 12:00 PM, soaring to a striking 13—a clear signal for outdoor enthusiasts to take precautions. The morning hours start gently, with a low of 1 at 07:00 AM, gradually escalating to 6 by 09:00 AM and hitting 9 at 10:00 AM. By 11:00 AM, the sun begins to assert itself with a 12. However, as the afternoon progresses, the UV intensity starts to wane, dropping to 10 at 2:00 PM, and tapering off to a mere 2 by 5:00 PM. As daylight diminishes, the UV Index dwindles to 0 by 7:00 PM, inviting a much-needed respite from the sun’s relentless rays. Always be vigilant and protect your skin during those peak hours!
| 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 | 13 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV exposure levels exhibit significant seasonal variation, with high-risk months predominantly occurring from February to September. In February, the UV Index reaches 10, categorized as very high, with a burn time of just 15 minutes. This trend continues to escalate, peaking in August at a UV Index of 14, demanding maximum caution due to its extreme classification and a mere 10 minutes burn time. As we transition into autumn, levels gradually decline, dropping to 10 in October and 9 in November, remaining very high until the year's end. Therefore, it is crucial for visitors and residents alike to prioritize sun protection, especially during these peak months. Applying sunscreen, wearing protective clothing, and seeking shade during the hottest parts of the day can help mitigate health risks associated with UV exposure.
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 |
| Changbu | 7 | 10 | 12 | 12 | 13 | 13 | 13 | 14 | 12 | 10 | 9 | 7 |