UV Index in Loei, Thailand

Last updated: July 2, 2025

Awareness of the UV Index is crucial for residents and visitors in Loei, Thailand, where the climate can lead to higher exposure risks, especially during midday hours. Understanding UV levels is essential for sunburn prevention and maintaining long-term skin health, as even short periods of exposure can have detrimental effects. With Loei's tropical climate presenting typically high UV readings—peaking at 14 between 12 PM and 1 PM—it's vital to stay informed and take proper precautions to enjoy the sun safely while protecting your skin.

Hourly UV Index in Loei

The UV Index paints a vivid picture of the sun's intensity as the day progresses. Morning kicks off with a low index of 1 at 07:00, a gentle start that quickly picks up momentum. By 09:00, it reaches 6, hinting that it’s time to consider some sun protection. The peak occurs at 12:00, when the index skyrockets to 14, indicating exceptionally high UV levels—perfect for keeping those sunscreen bottles handy! As the afternoon rolls in, the index begins to taper off, dropping to 11 at 14:00 and descending steadily thereafter. By evening, the UV Index dwindles to 0 at 19:00, inviting everyone to unwind as the sun retreats. This data serves as a reminder to stay vigilant under the midday sun and enjoy the outdoors while being sun-smart!

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	3	moderate	30 min
09:00	6	high	25 min
10:00	10	very high	15 min
11:00	13	extreme	10 min
12:00	14	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 Loei

Throughout the year, the UV Index presents significant seasonal variations, peaking during the warmer months from March to September, where it consistently reaches an extreme level, particularly from April to September with an index of 14. These months represent the high-risk period for sun exposure, with a minimal burn time of just 10 minutes. In contrast, January, November, and December fall within a very high exposure category, with burn times slightly longer at 15 minutes. Visitors and residents are strongly advised to take protective measures during the high-risk months, including using broad-spectrum sunscreen, wearing protective clothing, and seeking shade during peak sun hours. Staying informed and vigilant is crucial to minimize the risk of skin damage during these months of heightened UV exposure.

Monthly Maximum UV Index for Loei, Thailand

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

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

Loei's solar exposure compared to other cities in Thailand. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mueang Nonthaburi UVI	10	12	14	13	14	13	14	14	13	12	9	8
Samut Prakan UVI	10	12	14	13	14	13	14	14	13	12	9	8
Bangkok UVI	10	12	14	13	14	13	14	14	13	12	9	8
Udon Thani UVI	9	11	13	14	14	13	14	14	14	12	10	9
Loei	10	12	13	14	14	14	14	14	14	12	10	9
Chon Buri UVI	10	13	14	14	14	13	14	14	13	13	10	9