Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Beitan, China, where the provided UV readings highlight daily sun exposure risks. With the potential for significant UV levels peaking at 9 during midday, awareness is vital for preventing sunburn and protecting skin health. As Beitan experiences a Dwa climate, characterized by distinct seasonal variations, it's essential to recognize the UV variations throughout the day, especially during the warmer months. Being informed about UV levels allows you to enjoy the outdoors safely while minimizing the risk of skin damage.
At dawn, the UV Index starts at a mild 2 at 07:00, gradually rising to a moderate 3 by 08:00. As the morning progresses, the intensity increases; by 09:00, it reaches 5, and peaks at a robust 9 from 11:00 to 13:00—making this the most critical time for sun exposure. Subsequently, the index begins to decline, dropping to 7 at 14:00 and tapering off to 5 by 15:00. As the afternoon transitions into evening, the UV Index steadily decreases to 3 at 16:00 and settles back to 2 by 17:00, eventually winding down to a low 1 by 18:00 and 19:00. This data serves as a reminder to stay sun-safe during the peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | 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, the UV Index exhibits significant seasonal fluctuations, impacting the level of sun exposure risk for residents and visitors. January and December show the lowest UV levels (Index 2), categorized as low, with a burn time of approximately 45 minutes. As spring approaches, February sees a slight increase to an Index of 3 (moderate) with a burn time of 30 minutes, but it’s in March that the risk escalates to a high Index of 6, reducing burn time to 25 minutes. The most critical months for UV exposure are from April to August, where the Index reaches 8 to 11 and falls into the very high to extreme categories, significantly shortening safe exposure times to just 10-15 minutes in July. September to October offer some relief, but still present high risk levels with an Index of 6-7 and a burn time of 25 minutes. November returns to a moderate risk with an Index of 4. It is crucial for everyone to take necessary precautions—wearing sunscreen, protective clothing, and seeking shade—especially during the high-risk months of April through August.
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 |
| Beitan | 2 | 3 | 6 | 8 | 9 | 9 | 11 | 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 |