Cold Desert Climate: Key Features and Destinations
The cold desert climate, classified as BWk under the Köppen system, is a subtype of arid climate where the mean annual temperature remains below 18°C (64.4°F). Unlike hot deserts that bask in relentless heat, cold deserts experience bitterly cold winters and relatively mild to hot summers, all while receiving very little precipitation—often less than 250 mm (10 inches) annually. This climate occurs in mid-latitude continental interiors and high plateaus far from moisture sources, such as the Gobi Desert in Mongolia and China, the Taklamakan Desert in Xinjiang, the Patagonian steppes in Argentina, and parts of the Great Basin in the United States.
Seasonally, life in a cold desert is a study in extremes. Winters bring deep freezes with temperatures plummeting below -20°C (-4°F) in many areas, while summers can climb above 30°C (86°F). The meager precipitation often falls as snow in winter or as short, intense thundershowers in summer. The stark landscape features sparse vegetation, rugged mountains, and vast gravel plains. Despite the harsh conditions, these regions host unique wildlife and resilient human communities adapted to the challenging environment.
Top cities in this climate
About Cold Desert climate
The Köppen climate classification defines BWk as a cold desert where the mean annual temperature is below 18°C (64.4°F). To qualify as a desert, total annual precipitation (P) must be less than 10 times the temperature-dependent threshold, calculated as P < 0.44 × (mean annual temperature in °C) × 10 + 280 for winter-dominant precipitation regions, or similar formulas for summer-dominant or evenly distributed precipitation. In practice, cold deserts receive less than 250 mm (10 inches) of precipitation yearly, with some areas like the Gobi getting as little as 50 mm (2 inches). The dryness stems from their location in rain shadows or far from oceanic moisture.
Seasonal temperature patterns in BWk climates are highly continental. Winters are long and severe, with January averages in Ulaanbaatar, Mongolia, dropping to -25°C (-13°F) and record lows near -40°C (-40°F). Summers are warm to hot—July in Ulaanbaatar averages 17°C (63°F), while Turpan, China, can exceed 40°C (104°F) on summer days. Diurnal temperature swings are huge, often 20–30°C (36–54°F) within a single day. Precipitation is scarce year-round but often peaks in summer due to weak monsoonal influences (e.g., Gobi receives most rain in July and August), while winter snow cover is light and sporadic. The Patagonian cold desert (e.g., El Calafate) is milder, with winter averages around 0°C (32°F) and summer highs near 20°C (68°F), but still very dry—only about 150 mm (6 inches) of rain annually.
For travelers, the best times to visit cold deserts are spring (May–June) and autumn (September–October), when temperatures are moderate and days are pleasant. Summer can be scorching in lowland areas, while winter is dangerously cold for most visitors. Packing requires versatility: layers are essential, especially a high-quality down jacket for winter visits, along with sun protection (hat, sunscreen, sunglasses) as UV is intense even when cold. Sturdy boots are a must for the rugged terrain. Note that many cold deserts lie at high altitudes—Leh, India (the capital of Ladakh) sits at 3,500 m (11,500 ft) and can cause altitude sickness; acclimatization is recommended.
Notable cities in the BWk zone include Ulaanbaatar, the world's coldest national capital; Turpan, China, famous for its grapes and extreme heat; Leh, India's high-altitude desert hub; and El Calafate, Argentina, a gateway to Patagonian glaciers. Each offers a unique spin on the cold desert experience. Ulaanbaatar blends modernism with traditional nomadic culture; Turpan showcases ancient irrigation systems (karez) amidst vineyards; Leh mixes Buddhist monasteries with stark lunar landscapes; and El Calafate combines arid steppes with massive ice fields. Though all are dry and seasonally extreme, local geography and culture vastly shape the visitor's experience.
Часто задаваемые вопросы
Where are cold deserts found?
Cold deserts (BWk) are typically located in mid-latitude continental interiors and high plateaus, far from oceans that could provide moisture. Major examples include the Gobi Desert (Mongolia/China), the Taklamakan Desert (China), the Patagonian Desert (Argentina), and the Great Basin Desert (USA). They often lie in rain shadows or at high elevations.
What is the difference between BWk (cold desert) and BWh (hot desert)?
The main distinction is temperature. BWh (hot desert) has a mean annual temperature of 18°C (64°F) or higher, while BWk is colder than that. Hot deserts like the Sahara have scorching summers and mild winters, whereas cold deserts experience bitterly cold winters and can still have hot summers.
How much precipitation does a cold desert get?
Cold deserts receive very little precipitation, generally less than 250 mm (10 inches) per year. In extremely dry areas like parts of the Gobi, annual totals can be as low as 50 mm (2 inches). Most precipitation falls as summer rain or winter snow, but both are scarce.
Is it possible to visit cold deserts in winter?
Yes, but winter visits require careful preparation. Temperatures can drop to -40°C (-40°F) in places like Ulaanbaatar. If you are well-equipped with extreme cold weather gear, winter offers unique experiences such as ice festivals in Mongolia. However, most tourists prefer spring or autumn for milder conditions.
What kinds of plants and animals live in cold deserts?
Vegetation is sparse and includes drought- and cold-resistant plants like sagebrush, saltbush, and hardy grasses in North America, and saxaul trees and camelthorn in Central Asia. Animals include Bactrian camels, snow leopards (in mountainous areas), wild asses, and various rodents and birds adapted to extreme temperature swings.
Does it ever snow in cold deserts?
Yes, snow is common in winter, though the total amount is usually light—typically less than 50 cm (20 inches) annually. Snow cover can last for months in the coldest areas, adding temporary moisture that supports spring wildflowers in some regions.