UV Index in Hoang Sa, Vietnam

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Hoang Sa, Vietnam, where the tropical Aw climate can lead to significant sun exposure. With UV levels peaking at a staggering 13 around midday, awareness of these values is essential to prevent sunburns and protect skin health. Knowing when to seek shade or apply sunscreen can make a substantial difference in avoiding harmful UV rays. Given the region's typical climate and associated UV risks, staying informed enables everyone to enjoy the beautiful outdoors while safeguarding their well-being.

Hourly UV Index in Hoang Sa

The UV Index climbs swiftly throughout the morning, starting at a modest 1 by 7:00 AM and surging to a peak of 13 between noon and 1:00 PM. This midday intensity suggests a high risk of harm from unprotected sun exposure. As the afternoon unfolds, the index gradually declines, dipping to 8 at 3:00 PM and further to 2 by 5:00 PM. The UV radiation then recedes to 1 by 6:00 PM, before falling to a safe 0 come 7:00 PM. For sun seekers and outdoor enthusiasts, it’s crucial to stay protected during those peak hours from 11:00 AM to 1:00 PM for a safe and enjoyable day under the sun!

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	3	moderate	30 min
09:00	5	moderate	30 min
10:00	9	very high	15 min
11:00	12	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	0	low	45 min

Monthly UV Index Trends in Hoang Sa

During the year, UV Index levels exhibit significant seasonal variation, particularly peaking from February through September when the index reaches extreme levels of 12 to 14. The highest-risk months for UV exposure are March through September, with a consistent burn time of just 10 minutes in the extreme category. In contrast, January, November, and December show a very high exposure category at or below UV Index 10, where the burn time extends to 15 minutes. Given these findings, it is crucial for both visitors and residents to take appropriate precautions during the high-risk months, such as wearing sunscreen, protective clothing, and limiting sun exposure during peak hours to safeguard against skin damage.

Monthly Maximum UV Index for Hoang Sa, Vietnam

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

The table above highlights how UV exposure in Hoang Sa compares to other major locations across Vietnam. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Hoang Sa's solar exposure compared to other cities in Vietnam. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Hanoi UVI	8	10	12	12	13	12	12	13	13	11	9	7
Haiphong UVI	8	10	12	13	12	13	13	13	13	11	9	7
Da Nang UVI	10	12	14	15	14	13	14	14	13	12	10	9
Hoang Sa	10	12	13	14	14	13	14	14	14	12	10	9
Ho Chi Minh City UVI	10	13	15	14	14	12	13	14	13	13	11	10
Bien Hoa UVI	10	14	15	15	14	13	14	14	13	12	11	10