Summer in Nepal is defined by the arrival of the monsoon and lush, verdant scenery. From late May into summer the lowlands can become humid and the hill forests thick with rainfall, while higher trails often lie under cloud cover. Much of the Western and Central trekking zones slow down with muddy tracks, leeches in subtropical altitudes and reduced visibility on peaks like Mount Everest and Annapurna I. Nevertheless this season brings dramatic contrast - rivers brim, waterfalls thunder, rice paddies shine emerald, and the remote rain-shadow region of Upper Mustang remains accessible with dry skies. Wildlife in lowland reserves such as Chitwan National Park thrives, jungle lodges melt into the greenery, and village life in valleys such as the Langtang Valley takes on a quieter pace.