Last updated: July 2, 2025
Understanding the UV Index in Changfa, China, is crucial for the health and well-being of its residents and visitors alike. As this region experiences a Dwb climate characterized by warm summers and cold winters, heightened UV levels can pose significant risks, especially during peak hours. By staying informed about UV levels, you can effectively prevent sunburn and protect your skin against long-term damage. The UV Index peaks at 9 around midday, indicating a high risk of harm from unprotected sun exposure. Prioritizing UV awareness is essential to enjoy the beautiful sunny spells in Changfa while safeguarding your skin health.
The UV Index climbs steadily throughout the morning, starting at a manageable 3 at 07:00 and surging to a peak of 9 between 10:00 and 12:00. During these hours, sun protection is crucial as the intensity remains high, ideal for outdoor activities if precautions are taken. As the afternoon sets in, the index begins to decline, dropping to 8 by 13:00, and then tapering off to 6 at 14:00. By the afternoon, the risks lessen significantly, with readings falling to 4 at 15:00, and a gentle decline continues into the evening, reaching 1 by 17:00 and finally settling at 0 after 19:00. This pattern emphasizes the importance of maximizing sun safety during the midday hours, where the sun's rays are at their strongest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index exhibits significant seasonal variation, with the highest exposure levels occurring from April to August. During this period, particularly in May, June, and July, the UV Index reaches 9, categorized as very high, necessitating a burn time of only 15 minutes. April also marks the start of increased risk with a UV Index of 6 (high), while September sees a reduction to 6 as well, though precautions should still be taken. Conversely, the months of January, November, and December present a low UV Index of 2, offering a safer environment for outdoor activities without heavy protection. Visitors and residents are advised to schedule outdoor activities to minimize exposure during high-risk months, apply broad-spectrum sunscreen, wear protective clothing, and seek shade when necessary, particularly during peak hours from 10 a.m. to 4 p.m.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Changfa | 2 | 3 | 4 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 2 |
| 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 |
| Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |