Ulaanbaatar Weather & Climate: Best Time to Visit

The climate in Ulaanbaatar is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 24°C (75°F) in July to a very cold -15°C (5°F) in January.

Nighttime temperatures range from 11°C (52°F) in July to -28°C (-18°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Ulaanbaatar has a relatively dry climate with low precipitation, averaging 356 mm (14 in) of rain/snowfall annually. The seasons in Ulaanbaatar bring significant changes in precipitation. The wettest month, August, receives moderate rainfall, with an average of 72 mm (2.8 in) of precipitation. This rainfall is distributed across 16 rainy days.

In contrast, the driest month, January, experiences much less snowfall, totaling 3.6 mm (0.1 in) over 3 snowy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Ulaanbaatar Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

In Ulaanbaatar, summer days are longer and more sunny, with daily sunshine hours peaking at 10.0 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 5.1 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Ulaanbaatar.

The city experiences its highest humidity in December, reaching 79%. In May, the humidity drops to its lowest level at 46%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year