A dry climate with short, mild summers and long, severe winters (November to February). In the depths of the winter (December and January), temperatures can remain below 0˚ for several weeks. Cold snaps can bring the temperature to minus 30˚C (86˚F). Spring (March-May) brings unsettled weather, strong winds and wild fluctuations in temperature. Summers (June-August) are warm across the country, particularly in the Gobi Desert where temperatures can reach 40˚C (104˚F). Thunderstorms are common in late summer. September and October are cool in the north but quite pleasant in Gobi areas. July and August are generally the best months for travel.

Mediumweights are worn during summer, with very warm heavyweights advised for winter.