UV Index in Lang Son, Vietnam

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Lang Son, Vietnam, where the tropical climate brings high sun exposure. Awareness of UV levels helps prevent sunburn and maintain skin health, enabling you to enjoy the beautiful outdoors safely. With maximum UV levels peaking at 13 during midday, it's essential to know when to seek shade and protect yourself. As you navigate Lang Son’s vibrant landscapes and sunny days, staying informed about UV risks is key to safeguarding your skin and overall well-being.

Hourly UV Index in Lang Son

The UV Index for today presents a dynamic range, peaking significantly during the midday hours. Starting at a mild 2 at 07:00, the index climbs steadily to a moderate 4 by 08:00. However, as the sun rises higher, it surges to a striking 11 at 10:00, reaching its zenith with a critical 13 by 11:00 and holding steady until 12:00. As the afternoon sets in, the index begins a descent, tapering off to 12 at 13:00, then dropping to 9 by 14:00. The late afternoon brings further relief, with readings declining to 6 at 15:00, and continuing downwards to 1 by 17:00. As the sun retreats, the index falls to 0 by 19:00, marking a dramatic end to the day's UV exposure. Remember to protect your skin during those peak hours to enjoy the sunshine safely!

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	7	high	25 min
10:00	11	extreme	10 min
11:00	13	extreme	10 min
12:00	13	extreme	10 min
13:00	12	extreme	10 min
14:00	9	very high	15 min
15:00	6	high	25 min
16:00	3	moderate	30 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Lang Son

The seasonal UV changes reveal significant variation, with the highest UV Index observed from March to October, peaking at 14 in August, which falls into the extreme exposure category. The high-risk months for sun exposure are March through October, where the recommended burn time is notably short, between 10 to 15 minutes. Residents and visitors should take precautionary measures, such as wearing protective clothing, using broad-spectrum sunscreen with a high SPF, and seeking shade during peak hours, especially in the extreme risk months. As the UV Index subsides in November and December, residents can enjoy the outdoors with slightly reduced risk but should remain vigilant to avoid potential sun damage.

Monthly Maximum UV Index for Lang Son, Vietnam

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

The table above highlights how UV exposure in Lang Son 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.

Lang Son'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
Lang Son	8	10	12	13	13	13	13	14	13	11	9	7
Da Nang UVI	10	12	14	15	14	13	14	14	13	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