The climatic condition of Nepal differs from place to place depending upon geographical regions. One can have warm and hot wear in the terai whereas can observe the chilling arctic-like weather in the Himalayas. Nepal’s weather is influenced by a maritime and continental factor and has four different seasons, Autumn (September to November), followed by Winter (December to February), Spring (March to May), and finally, there is Summer/Monsoon (June to August).
The best time to go on an adventurous journey in the Himalayas is in Spring (March to May) and Autumn (mid-September to November). These are the best times to go on any treks and climbing trips because of stable weather and a moderate climate. There is only one place in Nepal, where you can go trekking in even monsoon (July to mid-September) and that is Upper Dolpo. This region lies in the rain shadow of Annapurna and Dhaulagiri ranges and therefore does not receive rainfall in the monsoon.
Autumn (September To November)
Autumn (September-November) is one of the perfect seasons to trekking with hiking in Himalayan Nepal, so thousands of trekkers choose these months. In fact, September, October, and November months are will be full of excellent atmosphere as well as beauty, enjoys your journey with joy and beauty. The Autumn season provides reference weather with clear magnificent mountains. The temperature is good than another season. September-November is a great time to express your adventure in Himalayan Nepal. It will also be free from natural disasters such as floods and landslides these months. It's the most famous season to goes high altitude area of Himalayan.
Winter (November To March)
Winter (November-March) is also possible to trek in Himalayan Nepal, the weather condition is stable and the days are clear. December, January and February are the cold months in Nepal. Days temperatures are cool but the nights are much cold. During the winter trek is risk winds and colder temperatures. Above 3,000m altitude being usually snowfall and freezing. If you are looking for wonderful scenery, let choose the lower elevation trek in Nepal.
Spring (March To May)
Spring (March-May) is the second famous trekking season in Himalayan Nepal. March, April, and May is also a great option to mountain climbing and high altitude trek. At spring morning weather condition will be clear, but the afternoon sky covered by the cloud, and sometimes can be rain. You can get to see beautiful flowers like jasmine, pine, and rhododendron with wild flora. During the Spring, lower altitude trek is mildly warm and above 3,000m quite a moderate temperature. This season also best to express your adventure in Nepal.
Summer (June To August)
In the summer season, the trekkers are less crowded in the Himalayan region will be less. June, July and August are the main raining season in Nepal which involves monsoon. Bad weather can hamper travel, maybe some problems during the journey due to heavy rain. Some travelers prefer to travel at this time as this is also not an emergency period. The weather is hot and almost everyday rains. This season is better for the tour to Tibet and in Himalayan Nepal like Mustang, Dolpo region, and Nar-Phu valley because these regions are in the rain-shadow.
