Last updated: June 2, 2025
In Longchi, China, understanding the UV Index is crucial for maintaining skin health and preventing sunburn, especially given its Cwa climate, which features warm summers. The UV levels can soar throughout the day, peaking at a significant 9 between 11:00 AM and 12:00 PM, indicating a higher risk of skin damage from unprotected sun exposure. By staying informed about UV Index readings, residents and visitors can take proactive measures to safeguard their skin while enjoying the beautiful outdoors of Longchi. Whether you’re planning a day of hiking or simply lounging in the sun, knowing when to seek shade or apply sunscreen can make all the difference.
Throughout the day, the UV Index experienced a dynamic rise and fall, peaking at 9 between 11:00 AM and 12:00 PM, indicating a heightened risk of harm from unprotected sun exposure. The morning hours began with a gentler index, starting at 2 at 07:00 and gradually climbing to 5 by 09:00. As the sun reached its zenith, the UV intensity surged to a maximum of 9, before gradually tapering off to 5 at 03:00 PM. By the late afternoon, the index declined to 2 by 05:00 PM, and eventually settled down to 1 after 06:00 PM, reflecting a considerably safer environment for evening activities. Staying informed about the UV index is crucial for enjoying the outdoors wisely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | 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 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | high | 25 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, UV Index levels fluctuate significantly, with the highest values occurring during the summer months. March marks the transition into high UV exposure with an index of 6, while April to August sees a peak UV Index ranging from 8 to 10, placing these months in the very high category and reducing safe burn time to just 15 minutes. July and August represent the highest risk months, with UV Index values reaching a dangerous 10. As summer wanes, September and October still pose a threat with 8 and 7 respectively, indicating a need for caution. Conversely, January, February, November, and December have a moderate UV Index around 3 to 4, allowing for longer burn times of 30 minutes. Visitors and residents should remain vigilant, especially from March to October, and take appropriate sun protection measures during these high-risk months.
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 |
| Longchi | 3 | 4 | 6 | 8 | 9 | 9 | 10 | 10 | 8 | 7 | 4 | 3 |
| 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 |