UV Index in Yen Bai, Vietnam

Last updated: July 2, 2025

In Yen Bai, Vietnam, understanding the UV Index is crucial for safeguarding your skin and overall health. With high UV levels, particularly peaking at 13 during midday hours, being aware of the sun's intensity can help prevent painful sunburns and long-term skin damage. The region's Cfa climate means that residents and visitors alike need to take extra precautions against harmful UV rays, especially during peak sun exposure times from 10 AM to 2 PM. Stay informed and protect yourself as you enjoy the beauty of Yen Bai’s outdoors!

Hourly UV Index in Yen Bai

As the sun rises, the UV Index begins its ascent, peaking at 13 around noon, making it a crucial time for sun safety. Starting at a modest 2 at 7:00 AM, the index steadily climbs, hitting 4 by 8:00 AM, and then surging to 10 at 10:00 AM. The intensity peaks at 12:00 PM, marked by a high of 13, before gradually declining to 6 by 3:00 PM. As the afternoon wanes, the values drop further, ending the day at a safe 0 by 7:00 PM. It’s clear that midday is the time to be sun-smart and protect your skin!

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	10	very high	15 min
11:00	12	extreme	10 min
12:00	13	extreme	10 min
13:00	12	extreme	10 min
14:00	10	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 Yen Bai

The UV Index experiences significant seasonal changes, peaking from March to October, when the risk of harmful exposure is at its highest. April to August are particularly critical months, with UV Index values ranging from 12 to 14 and an extreme exposure category, indicating that residents and visitors should limit their direct sun exposure to a mere 10 minutes. January and February also pose a risk with a very high exposure category, while the burn time is slightly longer at 15 minutes. As months progress towards November and December, the UV Index drops, falling to 9 and 7, respectively, categorized as very high and high, with burn times of 15 and 25 minutes. It is essential for everyone to use sunscreen, wear protective clothing, and seek shade during high UV periods, especially during the peak months.

Monthly Maximum UV Index for Yen Bai, Vietnam

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

The table above highlights how UV exposure in Yen Bai 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.

Yen Bai'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
Yen Bai	8	10	12	12	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