UV Index in Bac Ha, Vietnam

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Bac Ha, Vietnam, where the high-altitude climate brings unique sun exposure risks. With UV levels peaking at 13 between 11:00 AM and 1:00 PM, awareness of these fluctuations can help prevent sunburns and promote better skin health. By tracking the UV Index throughout the day, you can take proactive measures to protect yourself from harmful rays, ensuring your time outdoors remains enjoyable and safe.

Hourly UV Index in Bac Ha

The UV Index today offers a dynamic spectrum of sun intensity throughout the day. Starting off mild at 7:00 AM with a value of 2, the index climbs steadily as the sun ascends, peaking at a striking 13 between 11:00 AM and 12:00 PM. During these hours, it’s crucial to seek shade or apply sunscreen to protect your skin. The intensity then wanes from the early afternoon, dropping to 6 by 3:00 PM, and gradually dissipating to a calm 1 by 5:00 PM, where it hangs until sunset. Clearly, planning outdoor activities around the midday peak can help you enjoy the sunshine while staying safe!

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	13	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 Bac Ha

During the year, UV levels show distinct seasonal changes, with the highest UV Index typically occurring from March to October. Particularly, May and July peak at a UV Index of 14, categorizing them as extreme, alongside June and August at 13. Residents and visitors should be especially cautious during these months, as the burn time drops to just 10 minutes for unprotected skin. In contrast, January and February also present very high levels with an index of 8 and 10 respectively, maintaining a burn time of 15 minutes. As one moves into the late fall and winter, UV levels decrease; however, November remains a high-risk month with an index of 9. To protect against skin damage, it is crucial to seek shade, wear protective clothing, and apply broad-spectrum sunscreen, particularly during the high-risk months of March to October.

Monthly Maximum UV Index for Bac Ha, Vietnam

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

The table above highlights how UV exposure in Bac Ha 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.

Bac Ha'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
Bac Ha	8	10	12	12	14	13	14	13	12	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