Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors in Nanjiao, China, where the climate (classified as Dwa) brings significant UV exposure risks, especially during the sunniest hours of the day. With peak UV levels reaching as high as 10 around noon, awareness of these levels can help prevent harmful sunburns and protect your skin health. Knowing when to seek shade, apply sunscreen, or wear protective clothing is essential for enjoying outdoor activities without compromising your well-being. As Nanjiao's vibrant sunshine invites residents outdoors, staying informed about the UV Index empowers you to enjoy the sun safely and responsibly.
As the sun rises, the UV Index gradually transitions from a mild 1 at 07:00 to an invigorating 3 by 08:00. The peak UV intensity hits its stride between 12:00 and 13:00, reaching a striking 10, a clear call for sun protection. As the afternoon progresses, the index begins to decline, tapering off to 8 at 14:00, 6 at 15:00, and eventually settling to a gentle 2 by 17:00. By evening, the UV levels dip back down, returning to a safe 1, indicating it's time to relax and enjoy the cooler, softer light of sunset.
| 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 | 9 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits distinct seasonal changes that significantly affect sun exposure and burn times. January and December feature low UV levels (Index 2), allowing for longer burn times of 45 minutes, while February and November show moderate levels (Index 4) with burn times of 30 minutes. As spring approaches, the UV Index rises sharply; by March, it reaches 6 (high exposure category), reducing burn time to 25 minutes. The peak months for UV exposure are April through September, with the highest levels recorded in July and August at 10 (very high), necessitating a rapid reduction in burn time to just 15 minutes. Following summer, October and September see a decrease in UV levels (Index 8 and 6, respectively) with moderate burn times of 25 minutes. To ensure safety when enjoying outdoor activities, visitors and residents should take extra precautions during the high-risk months of April to September by seeking shade, wearing protective clothing, and using sunscreen consistently.
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 |
| Nanjiao | 2 | 4 | 6 | 9 | 9 | 9 | 10 | 10 | 8 | 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 |