Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors of Shangjiahe, China, as it plays a vital role in protecting skin health and preventing sunburn. With a climate that frequently exposes individuals to higher UV levels—especially between 10 AM and 2 PM when values soar to 10—being aware of these readings can help you make informed decisions about sun protection. As UV radiation can cause both immediate effects like sunburn and long-term skin damage, checking the UV Index daily is essential for enjoying the beautiful outdoor environments of Shangjiahe safely.
The UV Index throughout the day reveals a dynamic pattern of sun intensity, peaking dramatically as the sun climbs. At 07:00, it starts at a mild 2, but by 09:00, it escalates to a notable 7. The intensity reaches its zenith at 11:00 and 12:00, both with a robust 10, demanding protective measures for outdoor activities. As the afternoon progresses, the index gradually declines, falling to 5 by 15:00 and tapering off to 1 by 17:00, where it remains until twilight. This highlights the critical hours for sun exposure, especially between 10:00 and 14:00, when the sun’s rays are at their strongest.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 2 | low | 45 min |
08:00 | 4 | moderate | 30 min |
09:00 | 6 | high | 25 min |
10:00 | 8 | very high | 15 min |
11:00 | 9 | very high | 15 min |
12:00 | 10 | 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 | 1 | low | 45 min |
18:00 | 1 | low | 45 min |
19:00 | 0 | low | 45 min |
The UV Index shows significant seasonal changes, with the highest levels occurring from April to August. During this period, the UV Index reaches a peak of 10, categorized as very high, where the recommended burn time is only 15 minutes. The most critical months for UV exposure are April through September, making them high-risk periods for sunburn. Visitors and residents are strongly advised to take precautions during these months, such as wearing sunscreen, protective clothing, and sunglasses, and seeking shade whenever possible, especially during peak hours between 10 AM and 4 PM. In contrast, the UV Index is lower in January, February, October, November, and December, where the risk is classified as low to moderate, allowing for longer exposure times without significant risk of burns.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Shangjiahe | 2 | 3 | 6 | 8 | 8 | 10 | 10 | 10 | 8 | 5 | 3 | 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 |