UV Index in Viengthong, Laos

Last updated: July 2, 2025

Understanding the UV Index in Viengthong, Laos, is crucial for safeguarding your skin and overall health. With its tropical climate, the region experiences significant UV exposure, especially during the midday hours when readings can soar as high as 15. This is a reminder that even on seemingly mild days, knowing UV levels can help you prevent sunburn and skin damage. As the sun climbs from a manageable 1 at dawn to an intense 14 by noon, being vigilant allows residents and visitors to enjoy the beautiful landscapes without risking their skin health. Stay informed—your skin will thank you!

Hourly UV Index in Viengthong

The UV Index throughout the day presents a striking rise and fall in sunlight intensity. Starting from a modest 1 at 07:00, the index escalates dramatically, peaking at a scorching 15 around 12:00. This is the time to be extra cautious, with skin damage potential at its highest. As the afternoon progresses, the index gradually declines, returning to a more manageable 4 by 16:00 and settling at 0 by the time the sun begins to set at 19:00. Remember, the midday sun is the most intense—protect your skin during those 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	1	low	45 min
08:00	4	moderate	30 min
09:00	7	high	25 min
10:00	11	extreme	10 min
11:00	14	extreme	10 min
12:00	15	extreme	10 min
13:00	14	extreme	10 min
14:00	11	extreme	10 min
15:00	7	high	25 min
16:00	4	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Viengthong

Throughout the year, the UV Index exhibits significant seasonal fluctuations, with the highest risk months occurring from February to August. During this period, the UV Index frequently reaches extreme levels, peaking at 15 in May, July, and August. Residents and visitors should exercise caution, as the burn time for unprotected skin can be as little as 10 minutes during these months. In contrast, January, November, and December have a very high exposure category but with slightly longer burn times of 15 minutes. To mitigate risks, it is advisable to wear protective clothing, apply broad-spectrum sunscreen, and seek shade during peak sun hours, especially from late winter through summer.

Monthly Maximum UV Index for Viengthong, Laos

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

The table above highlights how UV exposure in Viengthong 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.

Viengthong'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
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
Viengthong	9	11	13	13	15	14	15	15	14	13	10	8
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