Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Jianzhu, China, where the Cfa climate brings warm, humid summers and significant sun exposure. Awareness of UV levels not only helps to prevent painful sunburns but is also vital for long-term skin health, reducing the risk of skin cancer and premature aging. Given that Jianzhu experiences peak UV levels of 12 around noon, it’s important to stay informed and take appropriate protective measures during these hours. Whether you’re stepping out for a quick errand or enjoying outdoor activities, knowing the UV Index can make all the difference for your skin.
At sunrise, the UV Index starts modestly at 2 around 07:00, but as the sun climbs higher, it rapidly intensifies. By 10:00, it peaks at an impressive 9, with a maximum of 12 reached at noon. This high UV index indicates a critical time for sun protection, as the levels moderate slightly in the afternoon. At 13:00, it remains robust at 11, tapering down to 6 by 15:00, before declining further to 4 at 16:00. As evening approaches, the UV Index drops to a minimal 1 by 18:00, finally settling at 0 by 19:00. This data reflects the importance of sunscreen and protective measures, especially during the peak hours of 10:00 to 14:00 when exposure is most harmful.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 6 | 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 |
As the seasons change, so do the UV Index levels, significantly affecting sun exposure risk. From January to February, the UV Index remains high (6-7), with a burn time of approximately 25 minutes. However, by March and April, this escalates to very high (10), where the burn time drops to just 15 minutes. The peak risk months are from May to August, where the UV Index reaches an extreme level of 11-12, necessitating protective measures for as little as 10 minutes of sun exposure. In September and October, the index remains very high (10-8) with a burn time of 15 minutes, before dropping to high (7) in November and moderate (5) in December, where burn times increase to 25-30 minutes. Visitors and residents should be particularly vigilant during the summer months, applying sunscreen, wearing protective clothing, and seeking shade to minimize the risk of sunburn and long-term skin damage.
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 |
| Jianzhu | 6 | 7 | 10 | 10 | 11 | 12 | 12 | 12 | 10 | 8 | 7 | 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 |