Last updated: May 3, 2025
Understanding the UV Index is essential for residents and visitors of Gangmen, China, where the climate zone Cwa brings distinct seasonal variations that can significantly impact sun exposure. Knowing the UV levels throughout the day is crucial for preventing sunburn and protecting skin health, especially with peak indices reaching as high as 13 between noon and 1 PM. With Gangmen's typically sunny weather, awareness of these fluctuations can help individuals enjoy the outdoors safely while minimizing the risk of skin damage. Stay informed and shield yourself effectively against harmful UV radiation!
The UV Index during the day reveals a notable peak in sun exposure. Starting at 07:00 with a gentle 1, it gradually climbs to 2 by 08:00. As the sun rises higher, the index surges dramatically, hitting 5 at 09:00, and reaching a striking 8 by 10:00. The intensity peaks at 12:00 with a scorching 13, remaining high until 13:00. After that, it starts to decline, returning to 11 at 14:00 and falling to 8 by 15:00. As the afternoon wanes, the index drops to 5 at 16:00, and finally settles back to 1 by 18:00 and 19:00. This data highlights the importance of sun safety measures during the midday hours when UV exposure is at its highest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 5 | 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 exposure levels fluctuate significantly, with January and February marking the beginning of very high UV Index levels (8-10), where the recommended burn time is only 15 minutes. As spring approaches, March to May sees a shift to extreme levels, peaking at 14 in August, which means visitors and residents should exercise extreme caution, with burn times reduced to just 10 minutes during this critical period. After August, the UV Index begins to decline, but September through November still maintains extreme to high exposure levels, advising caution with burn times adjusting from 10 to 15 minutes. By December, the UV Index decreases to 7, requiring a longer burn time of 25 minutes. In summary, the highest risk months for UV exposure are from March to August, and it is crucial for everyone to protect their skin with appropriate clothing and sunscreen to prevent harmful effects from UV radiation.
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 |
| 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 |
| Gangmen | 8 | 10 | 12 | 12 | 13 | 13 | 13 | 14 | 12 | 11 | 9 | 7 |