UV Index in Wuxi, China

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents of Wuxi, China, where the subtropical humid climate can lead to intense sun exposure, particularly in the summer months. Awareness of UV levels is essential not only for preventing sunburn but also for maintaining long-term skin health. With peak UV Index readings often soaring to 13 during midday hours, it’s vital for Wuxi’s inhabitants to take protective measures against harmful ultraviolet radiation. By keeping an eye on the UV Index, you can enjoy the sunny outdoors safely while minimizing the risk of skin damage.

Hourly UV Index in Wuxi

The UV Index peaks dramatically throughout the day, starting from a gentle 1 at 07:00 and gradually rising to an impressive 13 by 12:00. This midday surge marks the day’s highest UV exposure, with levels reaching 11 at 11:00 and 13:00. As the sun begins to descend, the index declines smoothly, tapering back to 8 at 15:00, then 5 at 16:00, and finally settling down to 1 by 18:00 and 19:00. It's essential to stay protected, especially during those peak hours, as the sun’s rays can be quite fierce!

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	3	moderate	30 min
09:00	5	moderate	30 min
10:00	8	very high	15 min
11:00	11	extreme	10 min
12:00	13	extreme	10 min
13:00	13	extreme	10 min
14:00	11	extreme	10 min
15:00	8	very high	15 min
16:00	5	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Wuxi

Throughout the year, UV index levels exhibit significant variation, with the highest levels occurring from April to August. Specifically, May and June see peak UV indices of 12 and 13 respectively, indicating an extreme exposure category that results in a burn time of only 10 minutes. Visitors and residents should take precautions during these high-risk months, as well as in March and September, which also experience very high UV levels of 10. To safeguard your skin, it is essential to wear sunscreen, protective clothing, and seek shade during peak sunlight hours. In contrast, January, February, November, and December have lower UV indices but still warrant awareness, as they fall into the high to very high categories with burn times of 15 to 25 minutes.

Monthly Maximum UV Index for Wuxi, China

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Wuxi. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for Wuxi, based on information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

Compare Wuxi UV Index with Other China Cities

The table above highlights how UV exposure in Wuxi compares to other major locations across China. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Wuxi's solar exposure compared to other cities in China. Generated using Copernicus Atmosphere Monitoring Service information.
	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
Wuxi	6	8	10	11	12	13	13	12	10	9	8	6
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