Last updated: August 1, 2025
Understanding the UV Index is essential for residents of Hecun, China, as it plays a crucial role in safeguarding skin health and preventing sunburn. With the region's Cwa climate—characterized by hot, humid summers—this localized awareness of UV levels helps residents enjoy outdoor activities safely. The UV Index peaks around noon, reaching levels of 10, indicating a high risk for harmful exposure. By keeping an eye on these daily fluctuations, you can take proactive steps to protect yourself and your loved ones from the effects of UV radiation and maintain healthy skin.
The UV Index peaks during the midday sun, reaching a maximum of 10 at noon, indicating a high risk of harm from unprotected sun exposure. As the day progresses, the index rises steadily from a mild 1 at 07:00 to an intensity of 9 by 11:00, prompting outdoor enthusiasts to stay protected. From 12:00 to 13:00, the UV Index remains at its highest, encouraging the use of sunscreen, hats, and protective clothing. Following this peak, it begins to dip gradually, falling to 4 by 16:00 and continuing to decrease to 1 by 19:00, when the day winds down and the sun begins to set. It's crucial to be mindful of these fluctuations and take necessary precautions during the peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 6 | 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 | 7 | high | 25 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | 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 changes significantly, with the highest UV Index occurring in the summer months of May to August, where the index reaches a peak of 10 and poses a very high risk of harm from unprotected sun exposure, with a burn time of just 15 minutes. For those living in or visiting the area, March also marks the beginning of heightened caution as the UV Index rises to 6, indicating high risk, and continues to climb throughout the spring into summer. April sees an index of 8, and by October, the index decreases to 7, still presenting a high risk for sunburn with a burn time of 25 minutes. Residents and visitors should take precautions during these months, particularly from April to September, including wearing sunscreen, protective clothing, and seeking shade during peak hours to minimize sun exposure and reduce the risk of skin damage. For the winter months of January, February, November, and December, while the UV Index is lower (ranging from 3 to 5), moderate exposure still requires some awareness to ensure skin protection.
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 |
| Hecun | 3 | 5 | 6 | 8 | 10 | 10 | 10 | 9 | 9 | 7 | 4 | 3 |
| 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 |