The best time to travel to Nanda Devi National Park is between months May and June and September to October. Travelling here in these months is the best and enjoyable. During the winter season, the weather of here is cold. Due to snowfall on the surrounding hills in the winter season, the temperature of here goes down very much. Due to heavy rains in the rainy season, it is a bit difficult to travel of here because of heavy rains threatening landslides.