Best time of year to Visit Nepal
October to November also referred as the autumn season, this is the time of the year with the clear blue skies and green and lush valleys, easily making it the best time in the year to visit Nepal. Adding to the weather is also the festive season that falls in these months, Tihar, the festival of lights (also known as the festival of the brothers and sisters) being the highlight of the many festivals. The temperature can be hot in the days with clear sky with no rains and can be very pleasant for the views of the mountains.
December to February it is winter in Nepal in these 3 months in Nepal. High altitude trekking can be unbearable because of the freezing cold, with many treks with high passes being close at this time of the year. This could be easily the best time to visit and do some moderate treks like Annapurna Base Camp, Everest Base Camp Trek, Langtang Trek etc if a quiet, peaceful and less people on trails is your priority. The weather remains calm, rainfall is rare during these months and trekking is still very much possible and enjoyable as well.
March to May The spring season falls during this time and is easily the busiest time of the year in some parts, Everest Trekking trail in particular being the busiest region. The days can get really hot, at times temperature crossing 30 degrees Celsius mark but the jungles with blossoming colourful Rhododendrons and other flowers with towering snow capped pinnacles at the background are an absolute delight to watch. March to May, along with October to November are the best months to trek in Nepal.
June to September The worst time to trek in Nepal as heavy rains, floods and landslides are common until mid September. However, places like the Upper Dolpo and upper parts of Mustang are the places to be at this time of the year because of the least rainfall in these areas. Apart from these areas, all other areas are a nuisance to trek during these times because of the rains and the problems like leeches, muddy trails, cancelled flights.