Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Nanxi, China, where the combination of a Cwa climate and high summer sun can lead to significant UV exposure. As UV levels can reach a peak of 12 around noon, being mindful of these readings is essential for preventing sunburn and promoting long-term skin health. Awareness of UV levels is particularly important in Nanxi, where the risk of harmful effects from the sun can escalate quickly. By staying informed about daily UV Index fluctuations, you can better protect yourself and enjoy the outdoors safely.
From the early morning hours, the UV Index gradually climbs, starting at a low level of 1 at 07:00. As the sun rises higher, the index reaches 2 by 08:00, then 3 at 09:00. The real intensity kicks in at 10:00, with a jump to 6, and peaks dramatically at 12:00, reaching a scorching 11. From there, it hits its maximum at 13:00 with a blistering 12, before gradually descending to 11 at 14:00. The afternoon sun begins to wane, dropping to 9 by 15:00, and continues to decline to 6 at 16:00. As evening approaches, the index slips back to 3 by 17:00, then returns to a safe 2 by 18:00 and finally back to 1 at 19:00. Throughout the day, it’s essential to stay protected during peak hours, especially between 11:00 and 13:00 when the UV exposure is at its highest.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 2 | low | 45 min |
09:00 | 3 | moderate | 30 min |
10:00 | 6 | high | 25 min |
11:00 | 8 | very high | 15 min |
12:00 | 11 | extreme | 10 min |
13:00 | 12 | extreme | 10 min |
14:00 | 11 | extreme | 10 min |
15:00 | 9 | very high | 15 min |
16:00 | 6 | high | 25 min |
17:00 | 3 | moderate | 30 min |
18:00 | 2 | low | 45 min |
19:00 | 1 | low | 45 min |
Throughout the year, UV exposure levels vary significantly, with the highest risks occurring from April through September. During this period, the UV Index peaks at 12, indicating extreme exposure levels, particularly in May and July, where burn time is as low as 10 minutes. Visitors and residents should take precautions during these months by wearing protective clothing, using broad-spectrum sunscreen with a high SPF, and seeking shade during peak sunlight hours. January and December are the safest months, with a moderate UV Index of 5 and longer burn times of 30 minutes. In contrast, February through October present increasingly high to extreme risks, necessitating heightened awareness and protective measures for those spending time outdoors.
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 |
Nanxi | 5 | 7 | 8 | 11 | 12 | 11 | 12 | 11 | 11 | 8 | 6 | 5 |
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 |