Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Dayan, China, as it directly impacts your skin health and the prevention of sunburn. Knowledge of UV levels empowers you to take necessary precautions, ensuring that you enjoy Dayan’s beautiful climate safely. With a Cfa climate characterized by warm summers and significant sun exposure, the UV Index can reach as high as 12 during midday. This highlights the importance of being vigilant, especially between 10 AM and 2 PM, when the sun is most intense. Stay informed and protect your skin to fully enjoy the beauty of Dayan!
The UV Index throughout the day offers a vivid glimpse into solar intensity, peaking dramatically as the sun reaches its zenith. Starting at 7:00 AM with a moderate 2, the index climbs steadily, reaching 4 by 8:00 AM. By 9:00 AM, it surges to 7, and from 10:00 AM to 12:00 PM, it hits its maximum, soaring to 12 at noon. As the day progresses, a gradual decline begins, with 11 at 1:00 PM and tapering down to 8 by 2:00 PM. The afternoon sees a gentle decrease, settling at 6 by 3:00 PM, and finally dwindling to a mere 1 by 5:00 PM. The sun's impact fades into the evening, where the UV Index drops to 0 by 7:00 PM, signaling a retreat from the day's solar embrace. This data highlights the importance of sun protection from late morning through early afternoon, when UV levels are at their highest.
| 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 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV exposure fluctuates significantly, peaking during the warmer months. The highest risk months are from May to September, where the UV Index reaches an extreme level of 12, allowing for a burn time of just 10 minutes. As spring arrives, March and April see a very high UV Index of 10, with a burn time of 15 minutes. While January and February present high UV levels of 6 and 7, the burn time remains manageable at 25 minutes. As fall approaches, October's UV Index drops to 8 and the burn time increases again to 15 minutes. It’s advisable for both visitors and residents to take precautions during peak months, such as seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen to minimize the risk of skin damage.
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 |
| Dayan | 6 | 7 | 10 | 10 | 12 | 12 | 12 | 12 | 11 | 8 | 6 | 5 |
| 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 |