UV Index in Hongzhou, China

Last updated: June 2, 2025

Understanding the UV Index in Hongzhou, China is crucial for safeguarding your skin health and preventing sunburn. With UV levels fluctuating throughout the day, particularly peaking at 12 around noon, being aware of these values can help you make informed decisions about sun protection. Hongzhou's humid subtropical climate (Cfa) brings hot summers and increased UV exposure risks, making it essential to stay vigilant against harmful rays. By keeping an eye on the UV Index, you can enjoy the outdoors while minimizing the risks associated with prolonged sun exposure.

Hourly UV Index in Hongzhou

As the sun rises, the UV Index starts off at a mild 1 at 7:00 AM, gradually climbing to a moderate 2 by 8:00 AM. However, things heat up as the day progresses; by 10:00 AM, it peaks at an impressive 8. The highest solar intensity strikes from 11:00 AM to 1:00 PM, with a staggering maximum of 12 during the noon hour. As the afternoon rolls in, the UV Index begins to taper off, dropping to 8 by 3 PM, and further declining to a gentle 1 by 7:00 PM. It’s clear that the midday sun is the most potent—remember to protect your skin during those 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	5	moderate	30 min
10:00	8	very high	15 min
11:00	11	extreme	10 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 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