Last updated: August 1, 2025
Understanding the UV Index in Zham, China is crucial for protecting your skin and overall health. With the peaks of the UV Index reaching as high as 17 during the sunniest hours, awareness of these levels is essential for preventing sunburn and long-term skin damage. This region, characterized by its Cwb climate, presents unique challenges, as residents and visitors must navigate the risks of intense exposure during midday, particularly from 12 PM to 2 PM. By staying informed about the UV Index, you can enjoy the outdoors safely while safeguarding your skin's health.
As the sun rises, the UV Index gradually climbs, starting at a maximum of 0 at 7:00 AM. The day quickly heats up, with the index reaching 1 by 8:00 and then escalating to 2 at 9:00. The intensity peaks dramatically at 12:00 PM with a blistering 12, reaching its zenith at 1:00 PM with a scorching 15. By 2:00 PM, the UV rays are at their most powerful, hitting 17, where they remain steady until 3:00 PM. A slight decline follows as the sun begins its descent, bringing the index down to 14 at 4:00 PM, then dipping to 10 at 5:00 PM. As evening approaches, the UV Index gently subsides to 6 by 6:00 PM, eventually settling at a safe 3 by 7:00 PM, making the early hours essential for sun safety.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 1 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 15 | extreme | 10 min |
| 14:00 | 16 | extreme | 10 min |
| 15:00 | 15 | extreme | 10 min |
| 16:00 | 13 | extreme | 10 min |
| 17:00 | 9 | very high | 15 min |
| 18:00 | 5 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, UV Index levels exhibit significant seasonal variation, with January and February marked as high-risk months, exhibiting very high exposure categories and requiring only 15 minutes of burn time. As the year progresses into March and peaks from April to July, levels escalate dramatically into the extreme category, with indices reaching 17 in July, necessitating cautious sun exposure within just 10 minutes to prevent skin damage. As summer wanes, UV levels slowly decline, yet September through October remain within the extreme category, urging continued vigilance. By November, the index drops to 9 and 15 minutes of burn time is necessary, while December sees a high risk with a UV index of 7 and burn time extending to 25 minutes. Visitors and residents are strongly advised to use adequate sun protection, including sunscreen, protective clothing, and seeking shade during peak hours, particularly from March to October, when UV risk is at its highest.
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 |
| Zham | 8 | 10 | 12 | 14 | 15 | 16 | 17 | 16 | 14 | 13 | 9 | 7 |