UV Index in Ha Giang, Vietnam

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors of Ha Giang, Vietnam, where sun exposure can pose serious health risks. With its Cwa climate, characterized by warm summers and cool winters, Ha Giang experiences intense UV levels that peak between 10 AM and 2 PM. Being aware of the UV Index not only helps in preventing sunburn but also plays a vital role in promoting overall skin health. With UV values soaring to as high as 14, it’s essential to take precautions to protect yourself from the sun’s harmful rays while enjoying the breathtaking landscapes this region has to offer.

Hourly UV Index in Ha Giang

As the sun rises, the UV Index begins its climb, starting at a modest 2 at 07:00. By 09:00, it escalates to 8, signaling a peak in intensity by 12:00 with the maximum of 14. The afternoon sees a slight dip, but 13 remains strong at 13:00, before gradually decreasing throughout the late afternoon and evening. By 19:00, the UV Index drops to 0, marking the end of a sun-drenched day. It's essential to protect your skin during those peak hours, especially from 10:00 to 14:00 when UV levels are at their most intense!

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	11	extreme	10 min
11:00	13	extreme	10 min
12:00	14	extreme	10 min
13:00	13	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 Ha Giang

The UV Index demonstrates significant seasonal fluctuations, with the highest levels observed from March to October, where the index peaks at 14 during the summer months of May through August. During these high-risk months, particularly from March to September when the UV exposure is categorized as extreme, burn times drop to just 10 minutes. In contrast, the UV Index decreases to 10 in February and 9 in November, still warranting caution, while in December, it further lowers to 7, marking a high risk with a burn time of 25 minutes. Visitors and residents should take essential precautions during the high UV months, such as applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade, especially during midday hours when UV exposure is most intense.

Monthly Maximum UV Index for Ha Giang, Vietnam

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

The table above highlights how UV exposure in Ha Giang 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.

Ha Giang'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
Ha Giang	8	10	12	12	14	14	14	14	13	12	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