UV Index in Hongzhou, China

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors of Hongzhou, China, as it plays a significant role in protecting against harmful UV radiation. With high UV levels peaking around midday, awareness helps prevent sunburn and supports long-term skin health. Hongzhou's humid subtropical climate (Cfa) contributes to intense sun exposure, especially during summer months, making it essential to monitor UV readings. Whether you're exploring the city's vibrant streets or enjoying outdoor activities, knowing the UV Index empowers you to take the necessary precautions for safe sun exposure.

Hourly UV Index in Hongzhou

The UV Index during the day reveals a notable peak in sun exposure. Starting at 07:00 with a gentle 1, it gradually climbs to 2 by 08:00. As the sun rises higher, the index surges dramatically, hitting 5 at 09:00, and reaching a striking 8 by 10:00. The intensity peaks at 12:00 with a scorching 13, remaining high until 13:00. After that, it starts to decline, returning to 11 at 14:00 and falling to 8 by 15:00. As the afternoon wanes, the index drops to 5 at 16:00, and finally settles back to 1 by 18:00 and 19:00. This data highlights the importance of sun safety measures during the midday hours when UV exposure 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	1	low	45 min
08:00	2	low	45 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 Hongzhou

The UV Index exhibits significant seasonal variation, peaking with extreme levels during the late spring and summer months. From April to September, the UV Index consistently remains between 11 and 13, categorized as extreme, with a notably short burn time of just 10 minutes. February through April also present high-risk months, with the index reaching 8 in February and 11 in April. Visitors and residents should take proactive measures to protect their skin during these months by seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen regularly. In contrast, December to January experiences a decrease in UV radiation, with the index dropping to 5, categorized as moderate, allowing for a safer exposure time of 30 minutes. Thus, understanding these seasonal changes is crucial for minimizing UV-related health risks.

Monthly Maximum UV Index for Hongzhou, China

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

The table above highlights how UV exposure in Hongzhou 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.

Hongzhou'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
Hongzhou	7	8	10	11	13	12	13	12	11	10	8	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