UV Index in Bangkok, Thailand

Last updated: June 2, 2025

In Bangkok, Thailand, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn, especially given the city's tropical climate. Understanding UV levels helps residents and visitors alike make informed decisions about sun exposure—crucial in a place where midday readings can soar as high as 13. With daily sunshine and high humidity typical in the region, knowing when to seek shade and protect your skin becomes essential. Stay vigilant and safe, because in Bangkok, the sun’s rays can pose serious risks to your skin health!

Hourly UV Index in Bangkok

The UV Index showcases a dynamic increase throughout the day, peaking at 13 around 12:00 PM. Starting from a gentle 1 at 7:00 AM, the index steadily climbs as the sun ascends, reaching 6 by 9:00 AM. The intensity becomes palpable by 11:00 AM with a sharp rise to 12, before hitting its zenith at 13 at noon, prompting caution for outdoor activities. As the afternoon unfolds, the levels begin to decline, dipping to 10 by 2:00 PM and gradually falling to 0 by 7:00 PM, signaling safer conditions for evening strolls. It’s essential to stay protected during the midday hours when the sun's rays are most intense!

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.
TimeUVICategoryTime to Burn
07:001low45 min
08:003moderate30 min
09:006high25 min
10:009very high15 min
11:0012extreme10 min
12:0013extreme10 min
13:0012extreme10 min
14:0010very high15 min
15:007high25 min
16:004moderate30 min
17:002low45 min
18:001low45 min
19:000low45 min

Monthly UV Index Trends in Bangkok

Throughout the year, UV index levels exhibit significant seasonal variations, with the highest readings occurring from February to October, where values reach a peak of 14 during the months of March, May, July, and August. These months are classified as high-risk for sun exposure, with an extreme exposure category and a minimal burn time of just 10 minutes. Visitors and residents should exercise caution during this period, wearing protective clothing, applying sunscreen frequently, and seeking shade to mitigate the risks associated with excessive sun exposure. Notably, from November to January, UV levels decrease, but remain at a very high category; thus, vigilance is still advised, especially during the winter sun.

Monthly Maximum UV Index for Bangkok, Thailand

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Bangkok. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec1012141314131414131298
Data source: Statistical UV Index data for Bangkok, 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 Bangkok UV Index with Other Thailand Cities

The table above highlights how UV exposure in Bangkok 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.
Bangkok's solar exposure compared to other cities in Thailand. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Bangkok1012141314131414131298
Mueang Nonthaburi UVI1012141314131414131298
Samut Prakan UVI1012141314131414131298
Udon Thani UVI9111314141314141412109
Chon Buri UVI10131414141314141313109