UV Index in Bac Ai, Vietnam

Last updated: August 1, 2025

Understanding the UV Index is crucial for residents and visitors in Bac Ai, Vietnam, where the tropical climate brings both sunshine and significant sun exposure risks. With peak UV levels reaching as high as 14 during midday hours, awareness of these fluctuations is vital for preventing sunburn and protecting your skin health. Knowing how to navigate these UV levels can help you enjoy the beautiful outdoors while minimizing risks associated with prolonged sun exposure. As Bac Ai experiences high temperatures and sunny days typical of its Aw climate, keeping tabs on the UV Index is an essential step in ensuring your safety and well-being.

Hourly UV Index in Bac Ai

The UV Index throughout the day exhibits a clear peak in the late morning, with values surging to a maximum of 14 at both 11:00 and 12:00. As the sun rises higher in the sky, the intensity of UV radiation builds rapidly, climbing from 2 at 07:00 to an impressive 11 by 10:00. After noon, however, the index begins a gradual decline, dropping to 12 at 13:00 before easing further to 5 by 15:00. As the day winds down, UV levels diminish significantly, ultimately reaching a low of 0 by 19:00. It serves as a reminder to embrace sun safety during the peak 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	2	low	45 min
08:00	4	moderate	30 min
09:00	8	very high	15 min
10:00	12	extreme	10 min
11:00	14	extreme	10 min
12:00	15	extreme	10 min
13:00	13	extreme	10 min
14:00	9	very high	15 min
15:00	5	moderate	30 min
16:00	2	low	45 min
17:00	1	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Bac Ai

Throughout the year, UV Index readings indicate extreme conditions from January to October, highlighting a significant risk for sunburn in just 10 minutes of unprotected skin exposure. March emerges as the month with the highest UV Index of 16, closely followed by April and May, both at 15. Visitors and residents should particularly take precautions during these high-risk months, especially from January to September, when UV levels consistently remain at or above 14. Even as the year progresses into October and November, UV levels remain notably high, so it’s crucial to wear appropriate sun protection year-round. This includes using broad-spectrum sunscreen, wearing protective clothing, and seeking shade to mitigate the risks associated with strong UV radiation.

Monthly Maximum UV Index for Bac Ai, Vietnam

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

The table above highlights how UV exposure in Bac Ai 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 Ai'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
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
Bac Ai	11	14	16	15	15	14	14	15	15	13	12	10