UV Index in Heishui, China

Last updated: October 4, 2025

Understanding the UV Index in Heishui, China, is vital for protecting your skin and overall health against harmful UV radiation. With a climate classified as Dwa — characterized by distinct seasonal variations — Heishui experiences varying UV exposure, particularly peaking between 10 AM and 2 PM, when the UV Index can reach a high of 9. Being aware of the UV levels helps residents and visitors alike take proactive measures in preventing sunburn and long-term skin damage, ensuring a healthier outdoor experience. Stay informed and safeguard your skin in the beautiful sun-drenched landscapes of Heishui!

Hourly UV Index in Heishui

The UV Index throughout the day showcases a dynamic pattern, peaking sharply at noon. Starting from a modest 2 at 07:00, it gradually climbs to 4 by 08:00 and reaches a notable 5 at 09:00. As the sun climbs higher, the intensity escalates, hitting a maximum of 9 at 12:00, before beginning its descent in the afternoon. The Index inches down to 8 from 13:00, then gently falls to 5 at 15:00, and continues its decline to 2 by 17:00. As the evening approaches, the UV levels taper off, settling at a low 1 by 19:00. This data emphasizes the importance of sun safety measures particularly during the midday hours when UV exposure is most critical.

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	3	moderate	30 min
10:00	4	moderate	30 min
11:00	4	moderate	30 min
12:00	4	moderate	30 min
13:00	4	moderate	30 min
14:00	3	moderate	30 min
15:00	2	low	45 min
16:00	1	low	45 min
17:00	1	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Heishui

Throughout the year, the UV Index fluctuates significantly, indicating varying levels of sun exposure risk. The high-risk months are from May to August, where the UV Index reaches a peak of 9, categorized as very high, with a burn time of just 15 minutes. April also poses a risk with a high UV Index of 7, suggesting a burn time of 25 minutes. Conversely, the months of January, November, and December show a low risk with UV indices of 2 and 1, allowing for extended exposure times of up to 45 minutes. Visitors and residents are advised to take extra precautions during the high-risk months by wearing sunscreen, protective clothing, and seeking shade during peak hours, while enjoying the sun responsibly in the milder months.

Monthly Maximum UV Index for Heishui, China

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

The table above highlights how UV exposure in Heishui 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.

Heishui'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
Heishui	2	3	5	7	8	9	9	9	7	4	2	1
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
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