UV Index in Jiangnan, China

Last updated: July 2, 2025

Understanding the UV Index in Jiangnan, China, is crucial for safeguarding your skin and overall health. With high UV levels peaking during midday, awareness of this index provides essential insights for sunburn prevention and skin protection. Jiangnan's Cfa climate brings long, humid summers, where UV exposure can reach dangerous levels—particularly between 10 AM and 2 PM, when readings soar to 11 or 13. Being informed about these fluctuating UV levels empowers residents and visitors alike to take proactive measures against harmful sun exposure, ensuring a healthier, more enjoyable time outdoors.

Hourly UV Index in Jiangnan

The UV Index for today reveals a striking pattern of sun intensity throughout the day. Starting at 7:00 AM, the index is a modest 1, but as the sun rises, so does the intensity—by 10:00 AM, it skyrockets to 7. The peak arrives at noon and 1:00 PM with a blistering 13, indicating a crucial time to protect your skin. As the afternoon progresses, from 2:00 PM to 3:00 PM, the index remains high but begins to taper off, dropping to 9 by 3:00 PM. The gentle decline continues into the evening, with UV levels plummeting to 1 by 6:00 PM and holding steady until sunset. Be mindful of the midday sun—it’s when the rays are most potent and protection is essential.

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	2	low	45 min
09:00	4	moderate	30 min
10:00	7	high	25 min
11:00	11	extreme	10 min
12:00	13	extreme	10 min
13:00	13	extreme	10 min
14:00	12	extreme	10 min
15:00	9	very high	15 min
16:00	6	high	25 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Jiangnan

Throughout the year, seasonal UV changes reveal significant variations in the UV Index, with the highest levels occurring during the summer months. High-risk months include February through October, particularly from March to September when the UV Index consistently reaches extreme levels of 11 to 13, resulting in a short burn time of just 10 minutes for unprotected skin. Residents and visitors are strongly advised to take precautions during these months, such as wearing sunscreen, protective clothing, and seeking shade, especially between 10 AM and 4 PM when the sun's rays are most intense. In contrast, the risk decreases in January, December, and November, but individuals should still remain vigilant in February and early November when the UV Index is marked as very high.

Monthly Maximum UV Index for Jiangnan, China

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Jiangnan. 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 Jiangnan, 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 Jiangnan UV Index with Other China Cities

The table above highlights how UV exposure in Jiangnan 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.

Jiangnan'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
Guangzhou UVI	7	9	11	12	13	13	13	12	11	10	9	7
Jiangnan	7	10	11	11	13	13	13	13	11	11	8	7
Shenzhen UVI	7	10	12	12	14	13	13	13	12	11	9	7