UV Index in Chengnan, China

Last updated: July 2, 2025

Understanding the UV Index in Chengnan, China, is crucial for anyone looking to protect their skin and overall health from the damaging effects of ultraviolet radiation. With peak UV levels reaching as high as 11 around midday, awareness of these readings can help residents and visitors alike take necessary precautions against sunburn and long-term skin conditions. Chengnan’s humid subtropical climate further intensifies UV exposure risks, particularly during the summer months when outdoor activities are at their peak. By staying informed about the daily UV Index, you can enjoy the sunny days while keeping your skin safe and healthy.

Hourly UV Index in Chengnan

The UV Index throughout the day reveals a dramatic rise in sun intensity, peaking during the late morning to early afternoon. Starting the day at a modest 2 at 7:00 AM, the index climbs steadily, reaching 11 by 11:00 AM and maintaining that level until 1:00 PM. This signifies a high risk of harm from unprotected sun exposure. Following this peak, the index begins to dip, dropping to 8 by 2:00 PM, and continuing its decline until it falls to 0 by 7:00 PM. With this information, it's crucial to take sun safety precautions—especially during the hours when the UV Index is at its highest!

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	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	11	extreme	10 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	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Chengnan

Throughout the year, the UV Index experiences significant seasonal changes, with the highest values typically occurring from March to August. The high-risk months are March (UV Index 9), April (UV Index 10), May and June (UV Index 11-12), where exposure is categorized as either very high or extreme, resulting in a markedly reduced burn time of only 10-15 minutes. As summer transitions to fall, the UV Index begins to decrease steadily, with October featuring a UV Index of 8 and November dropping to 6. Residents and visitors should be vigilant during the peak months, employing sun protection measures such as wearing sunscreen, protective clothing, and sunglasses to minimize the risk of skin damage. It is crucial to be informed about the local UV Index to stay safe, especially during the extreme exposure periods of late spring and summer.

Monthly Maximum UV Index for Chengnan, China

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

The table above highlights how UV exposure in Chengnan 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.

Chengnan'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
Chengnan	5	7	9	10	11	12	11	12	10	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