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Climate in Western Mongolia

Average daytime and nighttime temperatures


All climate diagrams on this site result from the collected data from 23 measuring weather stations in Western (Altai Mountains).
Weather stations at an altitude above 2260m have not been included.
All data correspond to the average monthly values of the last 20 years.


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Western (Altai Mountains) is the coldest region in Mongolia with an average high temperature of only 6°C. The climate is predominantly frosty cold and in the winter months the mercury does not even reach the positive range. In the cold season, the maximum temperatures are well below zero. Due to the warmer temperatures, the best time for traveling is from April to September. Winter athletes will find their favorite weather conditions from November to March.
Overview: Climate in Mongolia
Daylengths and sun positions in Mongolia
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Sunshine hours per day
The number of hours of sunshine refers to the time when the sun is actually visible. That is, without any obstruction of visibility by clouds, fog or mountains. With 10 hours per day, June is the sunniest month in the region of Western (Altai Mountains). In December, the sun shines the least.
Rain days per month
A rain day is a day on which at least 0.1 mm precipitation (=0.1 liter) per square meter falls. This can be rain, snow, hail or even dew. So it does not have to rain the whole day. With 8 rain days, July offers the most rain days, while January has the fewest.
Precipitation amount in mm/day
The amount of precipitation is measured in millimeters per square meter. Thus, at two mm/day, two liters of water fall on one square meter within 24 hours. With only 0.1 mm, the least amount of rain falls in January. July, on the other hand, has the most rain.
Relative humidity in %
Warm air can absorb more moisture than cold air. The relative humidity indicates how much moisture can be physically contained in the air. At high humidity, a person feels uncomfortable and perceives this as oppressive. In general, a relative humidity of 40-60% feels pleasant. With only 41% humidity on average, it is quite dry in May. The highest value of 71% is experienced here in January.
Absolute humidity in g/m³
In warm months, there is also a higher absolute humidity almost everywhere. At a temperature of 25°C, air can absorb up to 23 grams of water per cubic meter. At 20°C, it is only 17.3 grams. A relative humidity of 40% at 25°C thus corresponds to an absolute humidity of 9.2 grams of water. From a proportion of approx. 13.5 grams, humans perceive the air as muggy.
Climate charts for other regions in Mongolia

Map of Western (Altai Mountains)

Most important cities in the region »Western (Altai Mountains)«

Only very small villages are located here. The two biggest are Khovd and Ölgiy. The region has a west-east extension of about 800 km and over 420 km from north to south.

It consists of the five provinces Bayan-Ölgiy, Bayanhongor, Dzabkhan, Hovd and Uvs.


CityPopulationGeo position
Khovd30,50048° 0' 20"N91° 38' 31"E
Ölgiy28,40048° 58' 6"N89° 57' 45"E
Ulaangom28,08549° 58' 52"N92° 4' 0"E
Bayanhongor26,25246° 11' 40"N100° 43' 5"E
Bayanhongor23,23446° 43' 0"N100° 7' 0"E
Uliastay16,24047° 44' 30"N96° 50' 40"E
Tosontsengel9,52648° 45' 24"N98° 17' 2"E


Data basis: German Weather Service, individual values averaged and supplemented by own elements. Data on cities and inhabitants: geonames.org, United Nations Statistics Division and own research.
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