UV Index in Nantong, China

Last updated: June 2, 2025

Understanding the UV Index in Nantong, China is crucial for safeguarding your skin and overall health. With the city's humid subtropical climate, residents and visitors alike face significant UV exposure throughout the day, especially between 10 AM and 2 PM when levels can soar to a maximum of 12. This means the risk of sunburn—and long-term skin damage—is heightened during these hours. By staying informed about the UV Index values, you can take proactive measures to enjoy the sun safely, whether it’s applying sunscreen, wearing protective clothing, or seeking shade. So, keep an eye on the UV Index and protect your skin in beautiful Nantong!

Hourly UV Index in Nantong

At dawn, the UV Index starts off gently, peaking at just 1 by 7:00 AM. As the sun climbs higher, its intensity increases rapidly, reaching 4 by 9:00 AM and striking 10 by 11:00 AM—a clear warning to seek shade or slather on sunscreen. The highest reading of 12 occurs at both noon and 1:00 PM, indicating peak solar intensity. Fortunately, as afternoon approaches, the index begins to wane, dropping to 8 by 3:00 PM and further declining to below 5 by 4:00 PM. By the time 7:00 PM rolls around, the UV danger has diminished significantly, settling back to a safe 1. Stay protected during those intense midday hours!

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	10	very high	15 min
12:00	12	extreme	10 min
13:00	12	extreme	10 min
14:00	11	extreme	10 min
15:00	8	very high	15 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Nantong

The UV Index shows significant seasonal variation, with the highest levels occurring from April to August, classified as extreme (UV Index 11-12) and corresponding to a minimal burn time of just 10 minutes. March marks the transition into very high levels (UV Index 9), where the burn time decreases to 15 minutes. High-risk months include February to October, particularly highlighting the need for caution during the summer months. Visitors and residents should take appropriate precautions, such as wearing broad-spectrum sunscreen, protective clothing, and seeking shade, especially during peak hours when UV exposure is at its highest. In contrast, January and December represent the lower end of the UV Index, with moderate levels (UV Index 5), where burn times extend to 30 minutes.

Monthly Maximum UV Index for Nantong, China

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

The table above highlights how UV exposure in Nantong 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.

Nantong'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
Nantong	5	7	9	11	11	12	12	12	9	9	7	5
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