More than 1,900 families have been affected by the latest extreme weather, which began late last week, according to the national disaster management authority. Over 240 homes have been damaged or destroyed, and critical infrastructure including roads, buildings and bridges has been washed away.
Hundreds of trekkers on the Annapurna Circuit, a multi-week hiking route vital to Nepal's tourism economy, have been forced to cut their journeys short and seek safety. Many have been helicoptered out of the districts of Manang and Mustang, areas normally traversed over up to three weeks.
Several trekkers and their guides reported treacherous descents lasting three to four days, navigating collapsed roads and destroyed bridges.
Jake Stacy, a 21-year-old from Suffolk, was stranded with his guide in Yak Kharka in upper Manang due to heavy snowfall last week. He decided not to continue to the Thorang La pass, the circuit's highest point. "We made our own paths on mountain slopes," Stacy said.
Communities across several parts of Nepal are in mourning. From a damp tent in Battar, a town northwest of Kathmandu, Buti Tamang told the BBC Nepali service: "We used to live in a hut, but now there is nothing. We have lost so many of our relatives."
Another displaced resident, Ramesh Ghale, said: "Now it is raining and the tent leaks, so we've been facing a difficult situation. We have nowhere to go."
The new disaster compounds the devastation from August's floods, which killed 1,400 people and left thousands more missing. The region's monsoon season typically runs from June to September, but the intensity of this year's rains has been exceptional.