UV Index in Ko Kha, Thailand

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Ko Kha, Thailand, where the warm, tropical climate presents unique sun exposure challenges. The UV levels can soar to a staggering 14 at peak hours, making it essential to be aware of these fluctuations to prevent sunburn and protect skin health. With high UV risks during midday, knowledgeable sun safety practices can help you enjoy the beautiful Thai outdoors without the detrimental effects of ultraviolet rays. Stay informed and safeguard your skin as you explore the vibrant landscapes of this stunning region!

Hourly UV Index in Ko Kha

The UV Index begins its ascent at 7:00 AM, starting modestly at 1, but by 9:00 AM, it escalates to a more noticeable 6. The real surge occurs around 11:00 AM, peaking at an intense 12 and reaching its highest point of 14 by noon and 1:00 PM. As the afternoon progresses, the intensity starts to wane, dipping to 11 at 2:00 PM, and then gradually decreasing to 8 by 3:00 PM. As the sun sets, the UV levels drop swiftly, dropping to 4 at 4:00 PM, and ultimately retreating to a mere 1 by 6:00 PM and 0 by 7:00 PM. Throughout the day, it's clear to stay protected during those peak hours when the UV exposure could be most harmful.

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	9	very high	15 min
11:00	12	extreme	10 min
12:00	14	extreme	10 min
13:00	14	extreme	10 min
14:00	11	extreme	10 min
15:00	8	very high	15 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 Ko Kha

The UV Index exhibits notable seasonal variations, with the highest values recorded from February to October. The months of March through August are particularly high-risk, featuring an extreme UV Index of 12 to 14, which corresponds to a rapid burn time of just 10 minutes. Visitors and residents should exercise stringent sun safety measures during these months, such as seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen frequently. As the year progresses into November and December, the UV Index decreases to 10 and 8 respectively, categorized as very high, allowing for slightly extended burn times of 15 minutes, yet caution remains essential. By staying vigilant and informed about UV levels year-round, individuals can better protect their skin and overall health.

Monthly Maximum UV Index for Ko Kha, Thailand

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

The table above highlights how UV exposure in Ko Kha 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.

Ko Kha'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
Ko Kha	9	11	12	13	14	13	14	14	13	12	10	8
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
Chon Buri UVI	10	13	14	14	14	13	14	14	13	13	10	9