Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Dayao, China, where the climate can expose individuals to significant sun radiation risks. With UV levels peaking at 11 during midday hours, awareness of these levels is essential for preventing sunburn and protecting skin health. As Dayao experiences a Cwa climate, characterized by distinct wet and dry seasons, the potential for UV exposure varies throughout the year. By staying informed about the daily UV Index, you can take proactive measures to safeguard your skin and enjoy the beautiful days under the sun safely.
The UV Index throughout the day showcases a clear pattern of rising and falling intensity. Starting at a mild 2 at 7:00 AM, the levels climb steadily, peaking at 11 by noon—the most intense period of sunlight. As the afternoon progresses, the index remains high, tapering off to 10 at 1:00 PM, before gradually descending. By 3:00 PM, it drops to 5, and the evening settles in with indices of 3 at 4:00 PM, and a gentle decline to 1 by 7:00 PM. This progression highlights the importance of sun protection during peak hours—particularly between 10 AM and 2 PM—when the UV exposure is at its highest.
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 | 9 | very high | 15 min |
11:00 | 10 | very high | 15 min |
12:00 | 11 | extreme | 10 min |
13:00 | 10 | very high | 15 min |
14:00 | 8 | very high | 15 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, UV Index levels display a marked seasonal variation, indicating significant changes in sun exposure risk. The high-risk months for sunburn are from April to August, where the UV Index consistently reaches values between 8 and 11, classified as very high to extreme, with burn times dropping as low as 10 minutes in July and August. In contrast, January, November, and December present a much lower risk, with UV Index levels categorized as moderate. Visitors and residents are advised to take extra precautions during peak months by wearing protective clothing, applying broad-spectrum sunscreen frequently, and seeking shade when possible, especially during midday hours to minimize skin damage and health risks.
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 |
Dayao | 3 | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 8 | 6 | 4 | 3 |
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 |