UV Index in Nantong, China

Last updated: August 1, 2025

Understanding the UV Index is crucial for residents of Nantong, China, where the subtropical climate brings significant sun exposure throughout the year. With UV levels peaking at 12 during the middle of the day, being aware of these numbers can play a vital role in preventing sunburn and promoting better skin health. By keeping an eye on the UV Index, you can take necessary precautions to protect yourself from potential skin damage, especially during the intense hours of midday sun. In a city like Nantong, where sunny days can be frequent, understanding UV risks is essential for maintaining your health while enjoying the outdoors.

Hourly UV Index in Nantong

The UV Index today tells a compelling story of the sun's intensity as it rises and falls throughout the day. At 07:00, we start with a gentle UVI of 1, gradually climbing to 2 by 08:00. As the clock strikes 09:00, the intensity ramps up to 4, but it's not until 10:00 that we hit a significant level of 7. Midday thrill peaks at 12:00 with a commanding UVI of 12, remaining steady until 13:00 before it begins to wane. The afternoon brings a slight decline, with values decreasing to 9 at 15:00 and ultimately settling at a low 1 by 19:00 as the sun sets. This pattern underscores the importance of seeking shade and applying sunscreen during peak hours to enjoy the sun's warmth safely!

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