UV Index in Bayan, Mongolia

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Bayan, Mongolia, as it plays a vital role in protecting your skin and overall health. With peak UV levels reaching as high as 9 during midday, awareness of these levels can help prevent sunburn and long-term skin damage. Bayan's Dwc climate features harsh sunlight, particularly in the summer months, making it essential to grasp the risks associated with UV exposure. By staying informed about the UV Index, you can enjoy the outdoor beauty of Bayan while safeguarding your skin against harmful effects.

Hourly UV Index in Bayan

The UV Index reveals a dynamic day of sun exposure, peaking at 9 between 1 PM and 2 PM, indicating a notably high risk of harm from unprotected sun exposure. Early risers find the day starts with a comfortable 1 at 7 AM, gradually rising to 3 by 9 AM. By 11 AM, it reaches 7, encouraging outdoor enthusiasts to take precautions. The intensity continues to climb, soaring to its maximum at noon with an 8, before stabilizing at 9 during the early afternoon. As the sun begins its descent, the UV Index dips to 6 by 4 PM and further decreases to a 3 by 6 PM, finally settling at 1 as night falls. Enjoy the daylight, but remember to shield your skin during those peak 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.
TimeUVICategoryTime to Burn
07:001low45 min
08:002low45 min
09:003moderate30 min
10:005moderate30 min
11:007high25 min
12:008very high15 min
13:009very high15 min
14:009very high15 min
15:008very high15 min
16:006high25 min
17:004moderate30 min
18:003moderate30 min
19:001low45 min

Monthly UV Index Trends in Bayan

Throughout the year, the UV Index experiences significant fluctuations, indicating varying levels of sun exposure risk. From January to March, the UV Index rises gradually from 2 to 5, classified as low to moderate risk, where burn times range from 30 to 45 minutes. As we transition into April, May, June, July, and August, the UV Index peaks at 9, falling in the very high category, where the burn time reduces to just 15 minutes—making these months particularly high-risk for sunburn. September marks a decrease to 6 (high exposure), with a burn time of 25 minutes, while October to December returns to lower UV levels, with indices of 4, 2, and 1, respectively, allowing for longer burn times of 30 to 45 minutes. Visitors and residents should remain vigilant, especially during the high-risk summer months, by wearing sun protection and limiting sun exposure, particularly between 10 AM and 4 PM.

Monthly Maximum UV Index for Bayan, Mongolia

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Bayan. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec235799986421
Data source: Statistical UV Index data for Bayan, 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 Bayan UV Index with Other Mongolia Cities

The table above highlights how UV exposure in Bayan compares to other major locations across Mongolia. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Bayan's solar exposure compared to other cities in Mongolia. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Darhan UVI135689986421
Erdenet UVI235789986421
Bayan235799986421
Ulan Bator UVI235799996431
OElgii UVI2357109997521
Khovd UVI23671010997521