Although it boasts over 260 sunny days a year and is known as the 'Land of Blue Sky', Mongolia's climate is extreme. Long sub-arctic winters are the norm and you can see snow in the Gobi Desert as late as April; some lakes remain frozen until June. There's a short rainy season from mid-July to September, but showers tend to be brief and gentle. Because of the high altitude, evenings are cool even in summer. In Ulaan Baatar, the winter (October to April) is long and cold, with temperatures dropping to -30°C (-22°F) in January and February. Horrific dust storms kick up during the short spring (May to June).

