It is possible to climb Mera Peak all through the year although summer time is not recommended as it is also the monsoon period. However, spring and fall seasons are considered to be the best and most suitable time of the year for any climbing journey in the Himalayas. September through November is the fall season, also called autumn, and the temperatures are moderate and weather tends to be very clear. March through early June is the spring season and also the busiest climbing season of the year in Nepal. Mera Peak can also be attempted during the winter, but the extreme cold around this time could be hazardous for climbers who are not experienced enough to tackle the altitude as well as the biting cold.