What are the conditions necessary for the formation of sand dunes? Hi, Dunes are formed by interaction with the wind. Wind speeds of 10 to 20 mph,. are necessary for sand to start saltating under the direct pressure of the wind.
Winters are very harsh in Tundra climate. Winter months temperatures are usually between -18 and -50 degrees. Summer temperatures range from 35-50 degrees. High latitudes are the main cause of of the low temperatures. These areas mainly receive indirect sunlight.
Temperatures in the Arctic Tundra can go down to almost -60Â°F. The hottest time of the year can average to between 50Â°F-32Â°F. An average temperature that goes any higher than 32 degrees Fahrenheit exists for only as few as 55 days an year.emperatures in the Arctic Tundra can go down to almost -60Â°F. The hottest time of the year can average to between 50Â°F-32Â°F. An average temperature that goes any higher than 32 degrees Fahrenheit exists for only as few as 55 days an year.