Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Tangtou, China, where the climate brings both pleasant warmth and potential sun exposure risks. The UV Index provides vital information about the intensity of ultraviolet radiation, allowing individuals to take necessary precautions for sunburn prevention and maintaining long-term skin health. As a humid subtropical climate zone (Cfa), Tangtou experiences significant UV levels, peaking around midday with indices reaching as high as 13, making it essential for locals and visitors alike to stay informed and protected during those hours. Prioritizing UV awareness helps safeguard against skin damage and ensures that everyone can enjoy the outdoors safely.
As the sun rose, the UV Index began its climb, starting at a modest 2 at 07:00. By 08:00, it reached 4, signaling an emerging intensity. The index peaked between 10:00 and 12:00, soaring to a striking 13 at noon—ideal conditions for sunbathers but a call for caution against overexposure. The afternoon saw a gradual decline, with readings dropping to 6 at 15:00 and cooling further to 2 by 17:00. As twilight approached, the UV intensity waned, slipping to a safe 0 by 19:00, offering a gentle reminder of nature’s rhythm throughout the day.
| 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 | 10 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal changes, peaking during the summer months. January starts with a high exposure category (UV Index 7) and a burn time of 25 minutes, but by February, the index rises to 9, indicating very high risk with a reduced burn time of 15 minutes. The spring months, particularly March and April, see the index escalate to 12 (extreme risk), where burn times drop to 10 minutes. This trend continues into the summer, with May through August maintaining an extreme index of 13. September witnesses a slight decrease to 12 before dropping to 10 in October (very high), with November at 8 (very high) and December returning to 7 (high) with longer burn times of 25 minutes. Notably, the high-risk months are from February to September, when the UV exposure is particularly intense. Residents and visitors are advised to take precautions during these months, including wearing protective clothing, applying sunscreen frequently, and seeking shade during peak sun hours to minimize the risk of overexposure.
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 |
| Tangtou | 7 | 9 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 10 | 8 | 7 |
| Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |