UV Index in Chian Yai, Thailand

Last updated: May 3, 2025

Understanding the UV Index in Chian Yai, Thailand, is essential for protecting your skin from the sun's harmful rays. As a tropical region with a climate classification of Am, Chian Yai experiences significant UV exposure, particularly during midday when levels can soar to 14. Being aware of UV levels is crucial for preventing sunburn and maintaining long-term skin health. With peak UV exposure typically occurring between 10 AM and 2 PM, it's important for residents and visitors alike to stay informed and take proactive measures against potential skin damage.

Hourly UV Index in Chian Yai

The UV Index starts off relatively low at 1 around 7:00 AM, but as the sun climbs, it rapidly intensifies. By 9:00 AM, it reaches a moderate 6, escalating to a peak of 14 at noon, marking the hottest point of the day. Midday, particularly between 11:00 AM and 1:00 PM, sees the highest UV exposure, with values consistently at 13 and 14—a clear reminder to seek shade or apply sunscreen. As the afternoon wanes, the index steadily declines, dropping to 3 by 4:00 PM and tapering off to 1 by 6:00 PM, before reaching 0 at 7:00 PM. Planning outdoor activities? Aim for the early morning or late afternoon to stay safe from excessive UV rays!

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	13	extreme	10 min
14:00	11	extreme	10 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 Chian Yai

Throughout the year, UV Index levels demonstrate a consistent pattern of extreme exposure, particularly from January to October, where the index consistently ranges between 11 and 16. The high-risk months for UV exposure are from January to May, with March peaking at an index of 16. Although the intensity slightly diminishes in the summer months, June through August maintain high levels at 13 to 14. Visitors and residents should be particularly vigilant during these months, ensuring to limit sun exposure, wear protective clothing, and apply sunscreen every 10 minutes to prevent harmful effects. With the UV Index remaining high into the fall, it remains crucial to prioritize sun safety year-round.

Monthly Maximum UV Index for Chian Yai, Thailand

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

The table above highlights how UV exposure in Chian Yai 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.

Chian Yai'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
Chon Buri UVI	10	13	14	14	14	13	14	14	13	13	10	9
Chian Yai	12	14	16	15	14	13	13	14	14	14	12	11