Last updated: August 1, 2025
In Choushui, China, being aware of the UV Index is crucial for protecting yourself from the harmful effects of sun exposure. Understanding UV levels helps prevent sunburn and promotes long-term skin health, especially in a region where the climate is classified as Dwb, known for its distinct seasonal variations. During the sunniest hours, particularly between 10 AM and 2 PM, the UV Index can peak at a high of 10, posing significant risks for skin damage. With this knowledge, residents and visitors can take essential precautions to enjoy the outdoors safely while minimizing potential health impacts.
The UV Index (UVI) throughout the day exhibits a significant rise, peaking at 10 between 11:00 AM and 12:00 PM. Starting from a mild 3 at 7:00 AM, the UVI escalates as the sun climbs, reaching 5 by 8:00 AM and 7 by 9:00 AM. The intensity continues to increase dramatically, hitting 9 by 10:00 AM. After noon, the UVI begins to decline, dropping to 9 at 1:00 PM and further to 7 by 2:00 PM. The afternoon sees a gentle decline to 5 at 3:00 PM, slipping further to 3 by 4:00 PM. As dusk approaches, the UVI stabilizes at a low 1 from 5:00 PM to 7:00 PM, indicating minimal sun exposure risk. Outdoor enthusiasts should plan activities with peak hours in mind to ensure safety and enjoyment under the sun.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 10 | 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 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
As the seasons change, so does the UV Index, which significantly influences sun safety for both visitors and residents. During the winter months of January and December, UV levels remain low (Index 2), allowing for longer safe exposure times of 45 minutes. Moving into spring, February sees a moderate increase (Index 4) that reduces burn time to 30 minutes, escalating to a high level in March (Index 6) with a 25-minute burn time. The summer months of April through August present the highest risk, as the UV Index peaks at 10 during June, July, and August, necessitating protective measures with a dangerously short burn time of only 15 minutes. In fall, September's UV Index drops to 7 (high), offering 25 minutes of safe time, and October and November see moderate levels (Indexes 5 and 3, respectively) with burn times of 30 minutes. It is essential for everyone to stay informed, taking proactive measures like wearing sunscreen, protective clothing, and seeking shade, especially from April to August, when UV exposure is at its most harmful.
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 |
| Choushui | 2 | 4 | 6 | 8 | 9 | 10 | 10 | 10 | 7 | 5 | 3 | 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 |