Last updated: July 2, 2025
Understanding the UV Index is crucial for the health and well-being of residents in Langchi, China, where the subtropical climate brings both sunshine and UV exposure risks. As the UV Index can peak as high as 11 during midday, awareness of these levels is essential for sunburn prevention and maintaining healthy skin. With a climate classified as Cwa, Langchi experiences significant sun intensity, making it imperative to stay informed about daily UV fluctuations. From the vibrant morning rays to the intense afternoon sun, knowing when to seek shade or don protective clothing can make all the difference in safeguarding your skin and enjoying the great outdoors.
The UV Index fluctuates throughout the day, beginning with a gentle rise from a modest 1 at 07:00 to a peak of 11 at noon. As the sun reaches its highest point, the intensity of UV radiation escalates, urging caution and protection. The index remains high until 14:00, maintaining a reading of 10, before gradually declining in the afternoon. By 17:00, it drops to 3 and cools off to 1 by evening, highlighting the dramatic shift in UV exposure as daylight fades. For a sun-safe day, plan outdoor activities in the morning or later in the evening!
| 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 | 6 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 8 | very high | 15 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 |
The UV Index experiences significant seasonal changes, peaking during the summer months. January and December have a moderate UV Index of 4, allowing for a safe exposure time of 30 minutes before burning may occur. As we move into February and November, the index increases to 6, categorized as high, with decreased burn times of 25 minutes. The high-risk months begin in March with a very high index of 8, reducing safe exposure to 15 minutes. This trend escalates in April and May, with an extreme index of 11, where it's critical to limit sun exposure to only 10 minutes. The extreme category continues through the summer into September, and only starts to decline in October. As such, residents and visitors are strongly advised to take precautions from March through September, using sunscreen, wearing protective clothing, and seeking shade during peak hours to reduce the risk of sunburn and 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 |
| Langchi | 4 | 6 | 8 | 10 | 11 | 11 | 11 | 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 |