Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Shizijie, China, as it helps to gauge the intensity of ultraviolet radiation from the sun. By being aware of UV levels, you can effectively prevent sunburn and protect your skin health, avoiding long-term damage associated with overexposure. Shizijie's Dwa climate leads to significant UV exposure risks, especially during peak hours—typically from 10 AM to 2 PM—when the UV Index can soar to high levels, reaching a maximum of 10 at noon. Armed with this knowledge, you can enjoy the beautiful outdoor environment while taking the necessary precautions to safeguard your skin.
The hourly UV Index reveals a distinct pattern throughout the day. Starting at 07:00, the index is low at 2, but as the sun rises, the intensity increases significantly. By 10:00, it peaks at 8, reaching its highest point of 10 at 12:00—a time when sun protection is crucial. As the afternoon progresses, the index begins to decline, dropping to 5 by 15:00 and continuing to taper off until it reaches 1 by 17:00, where it remains through the evening hours. This data emphasizes the importance of being mindful of sun exposure, particularly during midday hours when the UV Index is at its most intense.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | 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 | 8 | very high | 15 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 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal variations, impacting safe sun exposure times. January and December present the lowest risk with UV Index values of 2 (low exposure), allowing for up to 45 minutes of safe sun exposure. As we transition into February, the UV Index rises to 3 (moderate exposure), reducing safe burn time to 30 minutes. The months of March to September pose greater risks, particularly April, May, June, and July, where UV Index values peak at 10 and 11 (very high to extreme), allowing only 10-15 minutes of safe exposure – making July the highest-risk month. As summer concludes in August and September, the UV Index slightly decreases but remains high. In October and November, conditions become milder again. Residents and visitors are advised to take precautions during high-risk months, including wearing sunscreen, protective clothing, and seeking shade whenever possible, especially when the UV Index exceeds 6.
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 |
| Shizijie | 2 | 3 | 6 | 8 | 8 | 10 | 11 | 10 | 8 | 6 | 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 |