UV Index in Hainan, China

Last updated: June 2, 2025

Understanding the UV Index in Hainan, China, is crucial for maintaining skin health and preventing sunburn, particularly in a region renowned for its vibrant sunshine and tropical climate. With UV levels peaking at 8 during the midday hours, awareness of these daily fluctuations can help residents and visitors alike take proactive measures against skin damage. Hainan's coastal setting not only invites outdoor activities, but it also poses a heightened risk of UV exposure; knowing the UV Index empowers individuals to enjoy their time in the sun safely while safeguarding their skin for the long term.

Hourly UV Index in Hainan

The UV Index throughout the day showcases a notable peak in intensity during the late morning hours. Starting from a mild 2 at 07:00, the index climbs steadily, reaching 6 by 09:00. The sun's rays hit their zenith between 10:00 and 12:00, where the UV Index stabilizes at a robust 8. As the afternoon progresses, the index begins to recede, dropping to 7 by 13:00, and settling at 6 by 14:00. By late afternoon, the UV exposure lightens significantly, falling to 4 at 15:00 and diminishing further to 1 by 17:00. The gradual decline emphasizes the importance of sunscreen and protective measures during the midday hours when UV intensity 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	2	low	45 min
08:00	4	moderate	30 min
09:00	6	high	25 min
10:00	8	very high	15 min
11:00	8	very high	15 min
12:00	8	very high	15 min
13:00	7	high	25 min
14:00	6	high	25 min
15:00	4	moderate	30 min
16:00	2	low	45 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Hainan

Throughout the year, UV levels vary significantly, with the most intense exposure occurring during the summer months. May through August are particularly high-risk months, showcasing UV Index values reaching up to 9 in July. During this period, the burn time decreases to just 15 minutes, indicating a need for heightened sun safety precautions. In contrast, the winter months of January, November, and December present low UV levels (UV Index 1-2), allowing for longer exposure times of up to 45 minutes without immediate risk of sunburn. Visitors and residents should take extra care from April to August by wearing protective clothing, using sunscreen, and seeking shade during peak sunlight hours to minimize the risk of skin damage.

Monthly Maximum UV Index for Hainan, China

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

The table above highlights how UV exposure in Hainan 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.

Hainan'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
Hainan	2	3	4	6	7	8	9	8	6	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