UV Index in Viangxai, Laos

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Viangxai, Laos, particularly given its tropical monsoon climate (Cwa), which results in intense sun exposure. With UV levels peaking at a formidable 14 around midday, awareness of these UV readings can play a vital role in preventing sunburn and promoting long-term skin health. By keeping track of the UV Index, you can better protect yourself from potential skin damage and enjoy the beauty of Viangxai safely.

Hourly UV Index in Viangxai

As the sun rises, the UV Index begins its climb, starting at a modest 2 at 07:00. By 08:00, it intensifies to 4, signaling a need for caution. The peak arrives impressively at 12:00, soaring to 14, which prompts strong recommendations for sun protection. Even at 11:00, the index is a high 13, suggesting the midday sun is at its most potent. After its zenith, the levels gradually recede, dropping to 10 at 14:00 and settling down to 7 by 15:00. As evening approaches, the index dwindles, reaching 3 by 16:00 and tapering off to 1 at both 17:00 and 18:00, before finally disappearing at 19:00. This day illustrates the critical need for vigilance against UV exposure, especially in the heart of the afternoon.

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	14	extreme	10 min
13:00	12	extreme	10 min
14:00	10	very high	15 min
15:00	7	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 Viangxai

Seasonal changes in UV exposure indicate that February through October are the highest risk months, with UV Index values reaching extreme levels of 11 to 15, resulting in a burn time of only 10 minutes for unprotected skin. Particularly, the pinnacle occurs in July with an index of 15. During these months, it's crucial for visitors and residents to take precautions such as wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours. January, November, and December show a declining trend, yet still present very high risk, with burn times of 15 minutes. As a reminder, it’s always wise to stay vigilant about sun protection, particularly during the summer months when the UV exposure is at its peak.

Monthly Maximum UV Index for Viangxai, Laos

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

The table above highlights how UV exposure in Viangxai compares to other major locations across Laos. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Viangxai's solar exposure compared to other cities in Laos. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Viangxai	9	11	13	13	14	14	15	14	14	12	10	8
Luang Prabang UVI	9	11	13	13	14	14	15	15	14	13	10	8
Vientiane UVI	9	11	13	14	14	13	14	14	14	12	9	8
Thakhek UVI	9	11	13	15	14	13	15	14	14	12	10	9
Savannakhet UVI	10	12	14	14	14	13	15	14	14	12	10	9
Pakse UVI	10	13	14	15	14	13	15	14	14	12	10	9