Last updated: June 2, 2025
In Shanghu, China, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn. Understanding the daily UV levels helps residents and visitors alike take the necessary precautions against harmful ultraviolet radiation, especially during peak hours. With a Dfb climate, Shanghu experiences significant UV exposure, particularly between 11:00 AM and 1:00 PM, when levels can reach as high as 9. By staying informed about the UV Index, you can enjoy the sun safely while protecting your skin from potential damage.
As the sun rises, the UV Index begins to climb, starting at a gentle 2 at 07:00. By 08:00, it reaches 3, hinting at a bright day ahead. The intensity peaks at 12:00, hitting an impressive 9, signaling that it's crucial to take sun safety measures during these hours. The UV Index remains elevated at 8 until 14:00, before gradually descending to 4 by 16:00. As the afternoon fades into evening, the index drops to a comfortable 1 by 18:00 and remains there until 19:00. Overall, it’s a day where sun protection is key, especially from late morning to early afternoon when the UV rays are at their strongest.
| 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 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so do the UV levels, significantly impacting exposure risks for visitors and residents. January starts with a low UV Index of 2, allowing for safe exposure of about 45 minutes. However, as we enter February, the UV rises to 4 (moderate), reducing burn time to 30 minutes. The most critical high-risk months are from March through August, where the UV Index peaks at 10 in May and stays consistently high at 9 during June and July. During this period, the burn time drops dramatically to just 15 minutes, emphasizing the need for protective measures, such as sunscreen and clothing. Following this peak, the UV Index decreases in September (7, high) and October (5, moderate), where burn times increase slightly to 25 and 30 minutes, respectively. By November and December, the UV levels fall back to a low level of 2, allowing for 45 minutes of safe exposure. Visitors and residents should remain vigilant about UV exposure, especially during the high-risk months and take appropriate precautions to minimize skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Shanghu | 2 | 4 | 7 | 8 | 10 | 9 | 9 | 8 | 7 | 5 | 2 | 2 |
| 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 |
| 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 |