Nepal plans to use a new study linking climate change to the fatal floods last month as the basis of a financial request from a United Nations fund.
The BBC understands that Nepal hopes to claim around $20m from the UN Fund for Responding to Loss and Damage, which helps countries affected by climate change.
Around 1,400 people have died in the disaster while 6,150 people remain missing in Nepal as of Wednesday, according official data.
The study by research group World Weather Attribution, published on Thursday, says climate change was a likely contributing factor in the avalanche of rock and ice that unleashed floods on the Nepal-Tibet border last month.
Large floods and landslides swept through border towns and villages in Nepal and Tibet, wiping out thousands of houses, destroying energy infrastructure and leaving thousands dead or missing.
Scientists say the floods were caused by a collapse of rock wall and glacier ice near the peak of Langtang Lirung, a mountain on Nepal's side of the Himalayas.
According to the study, July and August temperatures in the area were around 1.5C (2.7F) warmer "due to human influence on the climate".
In the wake of the floods, Nepal's leaders have said the country needs around $5bn to rebuild itself.
According to the World Weather Attribution study, a magnitude 7.8 earthquake that struck Nepal in 2015 and preceded a rock-ice avalanche could have also weakened the underlying rock mass - though it said it could not confirm the earthquake's precise impact on the recent disaster.