Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Longchang, China, where the warm climate can lead to notably high sun exposure. Awareness of UV levels helps in preventing sunburn and maintaining skin health, especially during peak hours when the index soars to 12 and 13—indicating a very high risk of harm from unprotected sun exposure. With a Cfa climate, characterized by hot summers, Longchang residents face elevated risks, particularly from 10:00 AM to 3:00 PM, when UV levels peak. Staying informed about the UV Index can make all the difference in enjoying the sun safely.
As the sun rises over the horizon, the UV Index begins its ascent. At 7:00 AM, it starts at a gentle 1 and gradually climbs to 2 by 8:00 AM. However, by 9:00 AM, the intensity ramps up to 5, marking the beginning of a significant rise. The peak occurs at 12:00 PM, reaching a blistering 12, and just after that, at 1:00 PM, it hits its highest point of 13. From there, the UV Index begins to descend; by 3:00 PM, it falls to 8, and continues to drop to 6 by 4:00 PM. As the sun sets, the UV Index winds down to 3 at 5:00 PM and finally settles back to a safe 1 by 6:00 PM, lingering at the same level until 7:00 PM. Be sure to take precautions during those peak hours when the UV Index is at its highest to enjoy the sunshine safely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index shows a clear trend of increasing intensity from January to July, peaking at 14 in July, which falls under the extreme exposure category with a burn time of only 10 minutes. The risk remains high through August and September before gradually decreasing in October and November. The highest-risk months are from April to August, characterized by extreme UV levels where caution is essential. During these times, visitors and residents are strongly advised to take proactive measures, such as applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade, especially around midday when the sun's rays are most intense. As we approach December, the UV levels drop significantly, but it’s still important to remain vigilant, particularly on sunny days.
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 |
| Longchang | 7 | 8 | 10 | 11 | 13 | 13 | 14 | 13 | 11 | 10 | 8 | 6 |
| 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 |