Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Dongshan, China, where the sun can be both a source of warmth and a potential risk to skin health. A higher UV Index signals an increased likelihood of sunburn, making it essential to grasp these levels to protect yourself and maintain skin integrity. In Dongshan's Cwb climate, characterized by warm temperatures and significant sunlight exposure, the risk of UV radiation peaks around midday, with levels reaching a striking 14—a reminder for everyone to practice sun safety. Being aware of the UV Index not only helps prevent burns but also promotes long-term skin health in this sunlit coastal locale.
The UV Index throughout the day paints a vivid picture of sun intensity, peaking dramatically around noon. Starting at a mild 1 at 07:00, it gradually rises, reaching 11 by 11:00—a warning that skin protection becomes crucial. The index reaches its zenith at 13 by 12:00 and 14 at 13:00, making these hours the most perilous for unprotected sun exposure. As the afternoon unfolds, the readings dip to 10 at 15:00, before sliding down to 7 at 16:00 and tapering off to a safe 1 by 19:00. This lively fluctuation underscores the importance of being sun-smart during peak hours!
| 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 | 14 | extreme | 10 min |
| 14:00 | 13 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences significant fluctuations, with notably high values from February to September. This period features extreme levels of UV radiation, especially in April, May, June, and July, where the UV Index reaches a peak of 14, leading to a burn time as short as 10 minutes. February and March are also high-risk months with UV indexes of 8 and 10, respectively. As summer transitions to fall, there's a gradual decline in UV exposure, but October, with a UV Index of 9, still poses a notable risk. Residents and visitors are advised to take necessary precautions during the high-risk months (February - September) by wearing protective clothing, applying sunscreen regularly, and seeking shade to reduce the risk of UV-related health issues. In contrast, January, November, and December present moderate burn times, allowing for relatively safer outdoor activities.
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 |
| Dongshan | 5 | 8 | 10 | 13 | 14 | 14 | 13 | 13 | 12 | 9 | 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 |