Last updated: June 2, 2025
In Nanwei, China, being aware of the UV Index is crucial for maintaining optimal skin health and preventing sunburn. With a humid subtropical climate (Cwa), residents and visitors alike face significant UV exposure during peak hours, particularly between 10 AM and 2 PM, when values reach as high as 10. Understanding these UV levels empowers individuals to take necessary precautions, ensuring safe outdoor activities while enjoying the beautiful, sunny days that characterize this vibrant region. Being informed about the UV Index can make a significant difference in safeguarding your skin against long-term damage.
As the day unfolds, the UV Index reveals a dynamic pattern that encourages cautious sun exposure. Starting gently at 1 at 07:00, the intensity slowly climbs to a moderate 2 by 08:00. However, the real ascent begins at 09:00, when the index reaches 4. The peak occurs between 12:00 and 13:00, with an impressive 10, indicating a high risk of harm from unprotected sun exposure. Following this peak, the UV levels gradually decline, dipping to 9 at 14:00 and then decreasing further to 3 by 17:00. As evening approaches, the UV Index wanes to 1 by 18:00 and 19:00, emphasizing the importance of smart sun safety, especially during the midday hours when the sun's rays are most potent.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 2 | low | 45 min |
09:00 | 4 | 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 | 10 | very high | 15 min |
14:00 | 9 | very high | 15 min |
15:00 | 7 | high | 25 min |
16:00 | 5 | moderate | 30 min |
17:00 | 3 | moderate | 30 min |
18:00 | 1 | low | 45 min |
19:00 | 1 | low | 45 min |
As the seasons change, the UV Index exhibits significant variations, highlighting periods of increased sun exposure that pose a higher risk of skin damage. From March through September, the UV Index peaks, especially in May and July with an extreme index of 11, necessitating vigilant sun safety measures. April and June also present very high levels, with indices of 9 and 10 respectively. Visitors and residents should take extra precautions during these high-risk months by seeking shade, wearing protective clothing, and applying sunscreen diligently. Outside of these peak periods, January, February, November, and December feature moderate levels, with a more manageable burn time of 30 minutes. However, even during these months, sunscreen is recommended to protect against harmful UV rays.
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 |
Nanwei | 3 | 5 | 7 | 9 | 11 | 10 | 11 | 10 | 9 | 7 | 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 |