Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors of Datun, China, an area characterized by a Dwa climate that can pose significant sun exposure risks. With UV levels peaking midday and reaching an index of 11, awareness of these values plays a vital role in sunburn prevention and overall skin health. As the sun's rays can cause immediate harm, knowing when to seek shade and applying adequate sunscreen can make all the difference in keeping your skin protected. Whether you’re enjoying the outdoors or carrying out daily activities, staying informed about the UV Index is essential for maintaining your health in this vibrant region.
The UV Index peaks dramatically as the day unfolds, beginning at a mild 2 by 7:00 AM. As the sun climbs higher, the intensity builds steadily, reaching 4 by 8:00 AM and then soaring to 7 at 9:00 AM. The sun’s rays hit their zenith at 12:00 PM, with an intensity of 11, signaling the necessity for sun protection. With a slight dip, the index remains high at 10 by 1:00 PM, before gradually declining to 8 at 2:00 PM. The afternoon sees a gentle descent, with the index falling to 5 by 3:00 PM, then further to 3 at 4:00 PM. As evening approaches, the UV Index drops significantly, settling at a low of 1 by 6:00 PM and staying consistent through 7:00 PM. It’s a strong reminder to safeguard yourself during the midday hours when the sun is most potent!
| 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 | 8 | very high | 15 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index shows significant seasonal variations, highlighting that the high-risk months for sun exposure are June through August, where the index peaks at 11 in July, indicating an extreme risk category with a burn time of just 10 minutes. Visitors and residents should take extra precautions during these months, including wearing sunscreen, protective clothing, and seeking shade during peak sun hours. As the year transitions into September and October, the UV risk decreases but still requires moderate attention, with index values falling to 5 and 3, respectively. To ensure skin safety year-round, monitor UV levels and adjust outdoor activities accordingly, especially during the very high and extreme exposure periods in the summer.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Datun | 2 | 3 | 6 | 8 | 8 | 9 | 11 | 10 | 7 | 5 | 3 | 2 |
| 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 |
| 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 |