UV Index in Sanya, China

Last updated: July 2, 2025

Understanding the UV Index in Sanya, China is crucial for protecting your skin and overall health. With its tropical climate, Sanya experiences high UV exposure levels, especially during peak hours, making awareness of UV index values essential for sunburn prevention. Knowing the UV levels can help you take appropriate precautions, ensuring you enjoy the warm, sunny days while safeguarding your skin from potential damage. With maximum UV Index readings soaring as high as 14 around noon, being informed empowers you to make smart choices about sun protection, keeping your skin healthy and radiant.

Hourly UV Index in Sanya

As the sun rises, the UV Index begins its ascent, starting low at 1 by 7:00 AM. By 9:00 AM, it climbs to a moderate 5, warning early risers to take heed. The real intensity arrives at 11:00 AM, peaking at a striking 11—a clear signal to seek shade and protect your skin. The peak continues at 12:00 PM and 1:00 PM, both hitting 14, where caution is paramount. Gradually, the UV radiation tapers off, dropping to 12 by 2:00 PM and declining further to 6 by 4:00 PM. As the day winds down, the index falls to 3 at 5:00 PM, and eventually settles back to 1 by 7:00 PM. It's a vivid reminder of the sun’s strength—stay protected during those midday 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	14	extreme	10 min
13:00	14	extreme	10 min
14:00	12	extreme	10 min
15:00	9	very high	15 min
16:00	6	high	25 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Sanya

The UV Index exhibits significant seasonal variations, with peak values occurring from March to October, categorizing these months as high-risk for sun exposure. During this period, particularly February through October, the UV Index remains in the extreme category, with maximum readings of 14 in March, April, July, and August, accompanied by a critical burn time of just 10 minutes. January and November show a slight decrease in UV levels, registering as very high with a burn time of 15 minutes. As such, it is imperative for both visitors and residents to take necessary precautions during these months, including wearing sunscreen, protective clothing, and seeking shade to mitigate the risk of UV-related skin damage.

Monthly Maximum UV Index for Sanya, China

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

The table above highlights how UV exposure in Sanya 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.

Sanya'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
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
Sanya	9	11	14	14	14	13	14	14	13	12	9	8