Answer:
Rara Lake is the biggest fresh water lake in the Nepalese Himalayas. It is the main feature of Rara National Park, located in Jumla and Mugu Districts of Karnali Province.
Summer is quite pleasant but winter is cold. The best visiting time to the lake is September/October and April to May. From December to March, the temperatures go low below the freezing point, and heavy snowfall occur up to one meter, blocking the way to the lake. April to June is warm in this region.
Monsoon season, which in this region occurs between the months of July to October, is short. The average rainfall during the ten-year period 1994–2003 was 800 mm. The surface temperature of the lake was found to be 7.5 °C to 7.6 °C and was visible below 14 m to 15 m.
Rara Lake, being surrounded by Rara National Park, has unique floral and faunal importance with rare and vulnerable species. The park was established in 1976 to preserve the beauty of the lake and protect it from sedimentation and adverse human activities. The Park flora consists of 1074 species, of which 16 are endemic to Nepal; the fauna includes 51 species of mammals and 214 species of birds.
Rara lake has been a popular destination with a very rough route in Western Nepal for trekkers. The glimpses of culture and scenery on the way is quite different from the rest of Nepal. Situated in high altitude, you can find the lake surrounded by Rara National Park with pine, spruce and juniper forest. The view of snow-capped Himalayan peaks enhance the attraction of trekkers. The trek begins with flight to Jumla (over an hour flight from Kathmandu) or from nearer Nepalgunj. Going along the mountain path and some villages one can reach the bank of Rara lake.
Rara has the potential of becoming the next major place for tourists to visit. During 1997–1998, the number of tourists visiting to this place was found to be 560, but in 2007 it decreased to 87 individuals. Rara Festival was conducted by the Nepal Tourism Board in early 2007 to promote domestic and international visit.