Why do climbers only try to go up Mt. Everest during a specific period of the year? (Site 1)

Climbers scale Mt. Everest in May due to 3 reasons: Wind, snow and temperature. For most of the year, winds of almost 100 miles per hour blast on the summit and can kill a person in minutes or even blow them away. It is only at the start of the Asian Monsoon that the wind dies down. This gives climbers a 7 to 10 day window to climb the mountain. Also, the temperature is normally warmer during this time of the year.

September is also a month that the wind slows down but during this period, snow falls so it is too cold to climb.