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Climate & Weather Guide in Mongolia

Climate zones, seasonal temperatures, rainfall patterns, and best travel times

Mongolia has a strongly continental, cold, and dry climate shaped by its inland location, high elevation, and mountain basins. Most of the country falls under cold semi-arid and cold desert Köppen types, with long, severe winters, short warm summers, and most precipitation concentrated from late spring to early autumn. Nationally, average annual precipitation is low, roughly 200-350 mm, while mountain areas receive more and the southern Gobi much less. The country is also very sunny, often described as the "Land of the Eternal Blue Sky," which makes summer conditions pleasant but winter conditions harsh for residents.

Summer Average

18-24°C

Winter Average

-24--8°C

Climate Types

Continental and Cold Semi-Arid and Cold Desert and Mountain

Annual Rainfall

100-400 mm

Sunshine Hours

2,600-3,000 hrs/yr

Average Humidity

40-65%

Regional Climate Variations

Northern and Central Steppe

This broad belt covers much of central Mongolia and the northern steppe, including areas around the capital and major grazing lands. It has the classic inland continental feel: warm, sunny summers, very cold winters, and a short transition season in spring and autumn. Rain is limited but somewhat better than in the south, with most falling in summer. For residents, this is the most balanced part of the country climatically, though winter heating demand remains high and wind can make conditions feel harsher than temperatures suggest.

Summer:18-24°C
Winter:-22--10°C
Low rainfall

Bright, dry, and strongly seasonal, with long freezing winters and short, comfortable summers.

Northern Mountain Belt

The forested and mountainous north receives more precipitation than the rest of the country and stays cooler year-round. Summers are mild rather than hot, while winters are long and very cold, with snow and ice persisting longer than on the steppe. This is the most moisture-rich part of Mongolia, but it is still not humid by global standards. For expats and residents, the tradeoff is cleaner mountain air and more greenery, but also colder conditions, more rugged access, and a shorter warm season.

Summer:15-21°C
Winter:-28--12°C
Low to moderate rainfall

Cooler, greener, and slightly wetter than the national norm, with a stronger mountain winter presence.

Eastern Plains

Eastern Mongolia is a vast open plain with a harsh, wind-exposed continental climate. Temperatures swing sharply through the year, and winter can feel especially severe because of wind chill and open terrain. Rainfall is still limited, but the summer growing season is important for grasslands and livestock. Residents can expect dry air, bright skies, and very large seasonal contrasts. This region suits people who prefer open landscapes and are comfortable with cold weather and limited precipitation.

Summer:18-25°C
Winter:-26--12°C
Low rainfall

Wide-open, windy, and dry, with fast-changing weather and pronounced winter severity.

Western Altai and Great Lakes Basin

Western Mongolia combines high mountains, basins, and colder upland valleys, producing strong local climate contrasts. Mountain slopes can receive more snow and rain than the basins, but the overall climate remains cold and dry. Summers are short and pleasantly mild, while winters are among the country’s coldest. This region is attractive for people who value dramatic scenery, but it is less comfortable for those who want milder winters or easy year-round travel.

Summer:14-22°C
Winter:-30--14°C
Low rainfall

Mountain-influenced and rugged, with colder valleys, more snow, and short, mild summers.

Southern Gobi Desert

The southern Gobi is Mongolia’s driest and most extreme climate zone, with a cold desert setting and very sparse rainfall. Summers can be hot in daytime, but the air stays very dry and nights cool quickly. Winters are severe, with strong cold outbreaks and limited snowfall. For residents, this is the toughest environment in the country for water availability, agriculture, and outdoor comfort, but it is also one of the sunniest and most striking landscapes.

Summer:22-30°C
Winter:-25--8°C
Very low rainfall

Extremely dry, intensely sunny, and highly seasonal, with heat in summer and severe cold in winter.

Mongolia is a large, highly diverse inland country with a mainly cold continental climate, ranging from relatively wetter northern mountains to extremely dry southern desert zones. For residents and expats, the main appeal is the very sunny summer season and the open landscapes, while the main challenge is the long, severe winter and low overall rainfall.