Last updated: July 2, 2025
Awareness of the UV Index is crucial for residents and visitors in Xiali, China, where the unique climate, classified as Cwa, can lead to varied sun exposure throughout the year. Understanding UV levels is essential not only for preventing painful sunburns but also for maintaining long-term skin health. During peak sun hours, especially between 10 AM and 2 PM, the UV Index can reach hazardous levels, peaking at a maximum of 11. It’s important to stay informed about these risks to protect yourself from potential skin damage and other related health issues associated with overexposure to ultraviolet radiation.
The UV Index reveals a striking daily rhythm, peaking during the midday hours. Starting at a low of 1 at 07:00, the index gradually climbs, reaching 3 by 08:00. As the sun rises higher, the UV exposure intensifies, surging to 7 by 10:00 and hitting a significant 10 at 12:00. The maximum UV exposure occurs at 13:00, topping out at 11, making it crucial for outdoor activity enthusiasts to take heed and protect their skin. Following this peak, the index begins to decline, easing to 9 at 14:00 and tapering off throughout the late afternoon, ultimately returning to 1 by 19:00. This data underscores the importance of sun safety, especially during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | 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 | 1 | low | 45 min |
Throughout the year, UV levels experience notable seasonal fluctuations, impacting the risk of sun exposure. From January to February, the UV Index is moderate (4-5), allowing for a burn time of 30 minutes without protection. As spring approaches, March sees an increase to a high level (7) with a reduced burn time of 25 minutes. The summer months, particularly June and July, present the highest UV levels, reaching an extreme index of 11 in July, where protective measures are crucial, and burn time is reduced to just 10 minutes. August and September maintain very high indices (9-10), with burn times of 15 minutes. As autumn arrives, the UV levels begin to drop, with November returning to moderate levels (5) and December hitting a low of 3. Given these patterns, it is advisable for visitors and residents to be especially vigilant during the high-risk months of April through September and to utilize sunscreen, protective clothing, andSeek shade whenever possible, particularly during peak sun 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 |
| Xiali | 4 | 5 | 7 | 8 | 10 | 10 | 11 | 10 | 9 | 8 | 5 | 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 |