UV Index in Viengthong, Laos

Last updated: June 2, 2025

In Viengthong, Laos, staying informed about the UV Index is crucial for safeguarding your skin health under the intense sun. With peak UV levels reaching as high as 14 during midday hours, understanding these fluctuations can help you prevent sunburn and long-term skin damage. The region’s Cwa climate brings a unique blend of tropical and temperate features, creating conditions where UV exposure can rapidly escalate. By regularly consulting the UV Index, residents and visitors alike can enjoy the great outdoors while minimizing risks and protecting their skin from harmful rays.

Hourly UV Index in Viengthong

The UV Index today showcases a striking rise in intensity as the morning unfolds. It starts off at a gentle 2 at 7:00 AM, gradually building to a moderate 4 by 8:00 AM. The sun climbs higher, peaking at an impressive 14 between 12:00 PM and 1:00 PM, where precautions are essential. As the afternoon progresses, the index decreases steadily, descending to 10 at 2:00 PM and tapering off to a 2 by 5:00 PM. After sunset, the UV Index drops to a 0 by 7:00 PM, marking the end of a day where sun safety should have been a priority in the midday 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	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	13	extreme	10 min
14:00	10	very high	15 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